Abstract

The present embodiments relate to methods and systems for analyzing and representing diamond appearance, and to an interactive, web-based encyclopedia of diamond cuts. The analytical methods involve the use of several unique techniques designed to capture and represent the nuances of different diamond cuts precisely. The graphical representations translate this complex gemological data into a format that is accessible and understandable to non-expert users. The diamond cut encyclopedia, generated by a unique enumeration algorithm, provides a comprehensive and detailed resource for both experts and enthusiasts alike. The present embodiments present a significant advancement in the field of gemology, offering increased precision in diamond analysis, user-friendly interfaces, and an efficient method for creating a comprehensive, interactive diamond cut encyclopedia.

IPC Classes  ?

• G06T 15/50 - Lighting effects
• G06T 7/50 - Depth or shape recovery
• G06T 7/60 - Analysis of geometric attributes
• G06T 11/20 - Drawing from basic elements, e.g. lines or circles
• G06T 13/20 - 3D [Three Dimensional] animation
• G06T 15/06 - Ray-tracing
• G06T 17/00 - 3D modelling for computer graphics

Abstract

The present embodiments relate to systems and methods for generating all possible gemstone faceting arrangements. An apparatus can include a computer, a computerized file storage system for saving results, and a mechanism that generates faceting arrangements satisfying user-defined constraints. The apparatus can feature a program that enables loading gemstone faceting designs and can offer adjustable settings to control the specific geometric parameters. The program can also provide users with 3D models satisfying geometric constraints. Additionally, the apparatus may incorporate a ray-tracing engine to assess the light performance qualities of the virtual gemstone model. The present embodiments can also include methods for optimizing diamond cut using a genetic algorithm.

IPC Classes  ?

• B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece
• B24B 9/16 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds, of jewels or the likeDiamond grinders' dopsDop holders or tongs
• B28D 5/00 - Fine working of gems, jewels, crystals, e.g. of semiconductor materialApparatus therefor

Abstract

The present embodiments relate to methods and systems for analyzing and representing diamond appearance, and to an interactive, web-based encyclopedia of diamond cuts. The analytical methods involve the use of several unique techniques designed to capture and represent the nuances of different diamond cuts precisely. The graphical representations translate this complex gemological data into a format that is accessible and understandable to non-expert users. The diamond cut encyclopedia, generated by a unique enumeration algorithm, provides a comprehensive and detailed resource for both experts and enthusiasts alike. The present embodiments present a significant advancement in the field of gemology, offering increased precision in diamond analysis, user-friendly interfaces, and an efficient method for creating a comprehensive, interactive diamond cut encyclopedia.

Abstract

The present embodiments relate to systems and methods for generating all possible gemstone faceting arrangements. An apparatus can include a computer, a computerized file storage system for saving results, and a mechanism that generates faceting arrangements satisfying user-defined constraints. The apparatus can feature a program that enables loading gemstone faceting designs and can offer adjustable settings to control the specific geometric parameters. The program can also provide users with 3D models satisfying geometric constraints. Additionally, the apparatus may incorporate a ray-tracing engine to assess the light performance qualities of the virtual gemstone model. The present embodiments can also include methods for optimizing diamond cut using a genetic algorithm.

Abstract

Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01J 3/28 - Investigating the spectrum
• G01N 21/65 - Raman scattering

Abstract

Systems and methods here may be used for a setup of fluorescence image capturing of a gemstone, such as a diamond placed on a flat stage. Some examples utilize a setup that both sends light and captures the image from the table side of the gemstone by passing ultraviolet (UV) light between 10 nm and 400 nm to the gemstone and capturing the excited fluorescence image for analysis through a dichroic beam splitter. In some examples, the cutoff is 300 nm. The dichroic beam splitter arrangement allows for the camera to focus on the same interface of the stage and gemstone over and over for ease of use and without moving, changing, or adjusting the equipment for different samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence

Abstract

Systems and methods here may be used for analyzing images of gemstones to automatically assign a haziness and/or fluorescence grade to the gemstone using contrast analysis on pixelated, digital images of the gemstones.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G06T 7/13 - Edge detection
• G06V 10/141 - Control of illumination
• G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
• G06V 20/69 - Microscopic objects, e.g. biological cells or cellular parts

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/87 - Investigating jewels
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass

Abstract

Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G06T 7/90 - Determination of colour characteristics

Abstract

Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamonds that are of high clarity grades. The present embodiments can provide methods to capture a diamond surface and internal clarity features from a diamond table and through and of other facets. Systems and methods may be used to convert gemstone dimension information into azimuth, slope, and distance information and adjust the motorized stage accordingly for surface imaging. Further, a calibration method can consider the offsets between design and actual system alignment. A calibration process can be used to compensate the offsets. Further, an additional conversion can be derived to compensate the offset caused by the geometry of the gemstone. The methods can automatically capture surface reflection images on facets of the gemstone and internal features taken through facets of the gemstone.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G01N 21/958 - Inspecting transparent materials
• G06T 7/00 - Image analysis
• H04N 23/95 - Computational photography systems, e.g. light-field imaging systems

Abstract

Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamonds that are of high clarity grades. The present embodiments can provide methods to capture a diamond surface and internal clarity features from a diamond table and through and of other facets. Systems and methods may be used to convert gemstone dimension information into azimuth, slope, and distance information and adjust the motorized stage accordingly for surface imaging. Further, a calibration method can consider the offsets between design and actual system alignment. A calibration process can be used to compensate the offsets. Further, an additional conversion can be derived to compensate the offset caused by the geometry of the gemstone. The methods can automatically capture surface reflection images on facets of the gemstone and internal features taken through facets of the gemstone.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G06T 7/00 - Image analysis
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/55 - Specular reflectivity

Abstract

Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.

IPC Classes  ?

• G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/87 - Investigating jewels

Abstract

A gem imaging system includes a stage having a platform configured to hold an object. The system further includes a light source configured to illuminate the object. The system further includes a housing configured to at least partially enclose the object. The housing is configured to position a mobile device such that a camera lens of the mobile device is aligned with the object.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• H04N 23/56 - Cameras or camera modules comprising electronic image sensorsControl thereof provided with illuminating means
• H04N 23/55 - Optical parts specially adapted for electronic image sensorsMounting thereof
• G06T 7/00 - Image analysis

Abstract

A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

IPC Classes  ?

• G06F 16/22 - IndexingData structures thereforStorage structures
• G01N 21/87 - Investigating jewels

Abstract

Systems and methods here may be used for capturing images of sample gemstones under structured, filtered illumination for later comparison and image matching for authentication using networked computer systems.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G06T 5/20 - Image enhancement or restoration using local operators
• G06V 10/141 - Control of illumination
• G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces
• G02B 5/20 - Filters

Abstract

Systems and methods here may be used for capturing images of sample gemstones under structured, filtered illumination for later comparison and image matching for authentication using networked computer systems.

IPC Classes  ?

• G06T 1/00 - General purpose image data processing
• G06T 5/10 - Image enhancement or restoration using non-spatial domain filtering
• G06T 7/00 - Image analysis

Abstract

Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

IPC Classes  ?

• G01J 3/44 - Raman spectrometryScattering spectrometry
• G01J 3/28 - Investigating the spectrum
• G01N 21/65 - Raman scattering
• G01N 21/87 - Investigating jewels

Abstract

Systems and methods here may be used for a setup of fluorescence image capturing of a gemstone, such as a diamond placed on a flat stage. Some examples utilize a setup that both sends light and captures the image from the table side of the gemstone by passing ultraviolet (UV) light between 10 nm and 400 nm to the gemstone and capturing the excited fluorescence image for analysis through a dichroic beam splitter. In some examples, the cutoff is 300 nm. The dichroic beam splitter arrangement allows for the camera to focus on the same interface of the stage and gemstone over and over for ease of use and without moving, changing, or adjusting the equipment for different samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence

Abstract

Systems and methods here may be used for automated alignment and focus adjustment for one or multiple sample gemstones on a stage, including determining gemstone sample tilt based on image data, automatically moving a stage to align the tilted sample, determing a focal plane that overlaps a focal point of a camera with the gemstone, and automatically moving a stage to the focal plane.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G01J 3/28 - Investigating the spectrum

Abstract

A gem imaging system includes a stage having a platform configured to hold an object. The system further includes a light source configured to illuminate the object. The system further includes a housing configured to at least partially enclose the object. The housing is configured to position a mobile device such that a camera lens of the mobile device is aligned with the object.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G06T 7/00 - Image analysis
• H04N 23/56 - Cameras or camera modules comprising electronic image sensorsControl thereof provided with illuminating means
• H04N 23/55 - Optical parts specially adapted for electronic image sensorsMounting thereof

Abstract

Systems and methods here may be used for automated alignment and focus adjustment for one or multiple sample gemstones on a stage, including determining gemstone sample tilt based on image data, automatically moving a stage to align the tilted sample, determining a focal plane that overlaps a focal point of a camera with the gemstone, and automatically moving a stage to the focal plane.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/17 - Systems in which incident light is modified in accordance with the properties of the material investigated

Abstract

Systems and methods here may be used for capturing and analyzing reflectance images of facets on a gemstone under particular lighting and camera setups to automatically generate a clarity grade and/or surface polish grade for the gemstone.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G06N 3/08 - Learning methods
• G06T 7/00 - Image analysis
• G01J 3/02 - SpectrometrySpectrophotometryMonochromatorsMeasuring colours Details

Abstract

Systems and methods here may be used for capturing and analyzing reflectance images of facets on a gemstone under particular lighting and camera setups to automatically generate a clarity grade and/or surface polish grade for the gemstone.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/87 - Investigating jewels

Abstract

A computer-based system and method for taking clarity measurements of a gem, and a computer-readable medium having computer-executable instructions, are provided and include receiving a pixilated image of a gem and identifying pixels representing an inclusion. The method and medium further include determining characteristics of the inclusion as a function of the pixels representing the inclusion, and providing a clarity grade based upon the determined characteristics. Also provided is a method for mapping a gem, and a computer-readable medium having computer-executable instructions, which include receiving a pixilated image of a gem having facet edges, and identifying pixels representing the facet edges. The method and medium further include generating a diagram of the gem, such that the diagram is a function of the pixels representing the facet edges, and superimposing the diagram onto the pixilated image.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G01N 21/87 - Investigating jewels
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

IPC Classes  ?

• G01J 3/44 - Raman spectrometryScattering spectrometry
• G01N 21/87 - Investigating jewels
• G01N 21/65 - Raman scattering
• G01J 3/28 - Investigating the spectrum

Abstract

Systems and methods here may be used for a laser inscriber or engraver of a gemstone using software feedback loops and multiple cameras to auto focus the system and automate the inscription.

IPC Classes  ?

• B23K 26/03 - Observing, e.g. monitoring, the workpiece
• B23K 26/08 - Devices involving relative movement between laser beam and workpiece
• B23K 26/359 - Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line

Abstract

Methods and systems described here include laser inscribing a gemstone, a computer in communication with a first light source and a second light source, and a laser generator to create an inscription on the gemstone, wherein the first light source is configured to be directed at the gemstone in the holder from a side view, wherein the second light source is configured to be directed at the gemstone in the holder from a girdle top-view, wherein the computer is configured to utilize the captured side image to map a side view girdle profile of the gemstone and calculate a relative motor movement to align each spot along the inscription with a laser focal plane.

IPC Classes  ?

• B23K 26/08 - Devices involving relative movement between laser beam and workpiece
• B23K 26/03 - Observing, e.g. monitoring, the workpiece
• B23K 26/035 - Aligning the laser beam
• B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light

Abstract

Systems and methods here may be used for a setup of fluorescence image capturing of a gemstone, such as a diamond placed on a flat stage. Some examples utilize a setup that both sends light and captures the image from the table side of the gemstone by passing ultraviolet (UV) light between 10 nm and 400 nm to the gemstone and capturing the excited fluorescence image for analysis through a dichroic beam splitter. In some examples, the cutoff is 300 nm. The dichroic beam splitter arrangement allows for the camera to focus on the same interface of the stage and gemstone over and over for ease of use and without moving, changing, or adjusting the equipment for different samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence

Abstract

Systems and methods here may be used for analyzing images of gemstones to automatically assign a haziness and/or fluorescence grade to the gemstone using contrast analysis on pixelated, digital images of the gemstones.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G06T 7/13 - Edge detection
• G06V 10/141 - Control of illumination
• G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
• G06V 20/69 - Microscopic objects, e.g. biological cells or cellular parts

Abstract

Systems and methods here may be used for a analyzing images of gemstones to automatically assign a haziness and/or fluorescence grade to the gemstone using contrast analysis on pixelated, digital images of the gemstones.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/64 - FluorescencePhosphorescence
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/87 - Investigating jewels

Abstract

Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.

IPC Classes  ?

• G06T 7/90 - Determination of colour characteristics
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 21/87 - Investigating jewels
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.

IPC Classes  ?

• G01J 3/42 - Absorption spectrometryDouble-beam spectrometryFlicker spectrometryReflection spectrometry
• G01J 3/44 - Raman spectrometryScattering spectrometry
• G01N 21/87 - Investigating jewels
• G01N 21/35 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
• G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light

Abstract

Some examples herein include systems and methods of creating standards of gemstones of various classifications, which may display certain characteristics of the various classifications when excited by ultraviolet radiation and fluoresce in response. In some examples, a set of standards are created using fluorescent material, filters, and a radiation source to compare against a sample gemstone. In some examples, specific Light Emitting Diodes are selected to illuminate the gemstone samples under analysis.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence
• B07C 5/34 - Sorting according to other particular properties

Abstract

Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.

IPC Classes  ?

• G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/87 - Investigating jewels
• G01J 3/44 - Raman spectrometryScattering spectrometry

Abstract

Some examples herein include systems and methods of creating standards of gemstones of various classifications, which may display certain characteristics of the various classifications when excited by ultraviolet radiation and fluoresce in response. In some examples, a set of standards are created using fluorescent material, filters, and a radiation source to compare against a sample gemstone. In some examples, specific Light Emitting Diodes are selected to illuminate the gemstone samples under analysis.

IPC Classes  ?

• G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material
• F21Y 113/13 - Combination of light sources of different colours comprising an assembly of point-like light sources
• F21Y 115/10 - Light-emitting diodes [LED]
• G01N 21/87 - Investigating jewels

Abstract

Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

IPC Classes  ?

• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• F25D 3/10 - Devices using other cold materialsDevices using cold-storage bodies using liquefied gases, e.g. liquid air
• G01N 21/87 - Investigating jewels
• G01N 25/18 - Investigating or analysing materials by the use of thermal means by investigating thermal conductivity

Abstract

Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamond, exposed to different light sources. Some examples utilize a setup that both sends light and captures the image through multiple dichroic beam splitters at pre-selected timing. The multiple light source and multiple dichroic beam splitter arrangement allows for multiple gemstones to be analyzed using multiple methods with minimal moving, changing, or adjusting the equipment for different samples.

IPC Classes  ?

• G01N 21/64 - FluorescencePhosphorescence
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G02B 27/14 - Beam splitting or combining systems operating by reflection only
• G06T 7/90 - Determination of colour characteristics
• G02B 27/10 - Beam splitting or combining systems

Abstract

Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamond, exposed to different light sources. Some examples utilize a setup that both sends light and captures the image through multiple dichroic beam splitters at pre-selected timing. The multiple light source and multiple dichroic beam splitter arrangement allows for multiple gemstones to be analyzed using multiple methods with minimal moving, changing, or adjusting the equipment for different samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/63 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited

Abstract

A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

IPC Classes  ?

• G06F 7/00 - Methods or arrangements for processing data by operating upon the order or content of the data handled
• G06F 16/22 - IndexingData structures thereforStorage structures
• G01N 21/87 - Investigating jewels

Abstract

Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/65 - Raman scattering
• G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
• G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands

Abstract

Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

IPC Classes  ?

• G01J 3/44 - Raman spectrometryScattering spectrometry
• G01N 21/87 - Investigating jewels
• G01N 21/65 - Raman scattering
• G01J 3/28 - Investigating the spectrum

Abstract

Systems and methods here may be used for a setup of fluorescence image capturing of a gemstone, such as a diamond placed on a flat stage. Some examples utilize a setup that both sends light and captures the image from the table side of the gemstone by passing ultraviolet (UV) light between 10 nm and 400 nm to the gemstone and capturing the excited fluorescence image for analysis through a dichroic beam splitter. In some examples, the cutoff is 300 nm. The dichroic beam splitter arrangement allows for the camera to focus on the same interface of the stage and gemstone over and over for ease of use and without moving, changing, or adjusting the equipment for different samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Systems and methods here may be used for a setup of fluorescence image capturing of a gemstone, such as a diamond placed on a flat stage. Some examples utilize a setup that both sends light and captures the image from the table side of the gemstone by passing ultraviolet (UV) light between 10 nm and 400 nm to the gemstone and capturing the excited fluorescence image for analysis through a dichroic beam splitter. In some examples, the cutoff is 300 nm. The dichroic beam splitter arrangement allows for the camera to focus on the same interface of the stage and gemstone over and over for ease of use and without moving, changing, or adjusting the equipment for different samples.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass

Abstract

A computer-based system and method for taking clarity measurements of a gem, and a computer-readable medium having computer-executable instructions, are provided and include receiving a pixilated image of a gem and identifying pixels representing an inclusion. The method and medium further include determining characteristics of the inclusion as a function of the pixels representing the inclusion, and providing a clarity grade based upon the determined characteristics. Also provided is a method for mapping a gem, and a computer-readable medium having computer-executable instructions, which include receiving a pixilated image of a gem having facet edges, and identifying pixels representing the facet edges. The method and medium further include generating a diagram of the gem, such that the diagram is a function of the pixels representing the facet edges, and superimposing the diagram onto the pixilated image.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G01N 21/87 - Investigating jewels
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

A gemstone detection method is provided and includes using a camera to generate a set of training pictures illustrating three-dimensional features of a gemstone cut with a pattern. Each training picture in the set of training pictures includes facets of and inclusions within the gemstone visible along a point-of-view (POV) through the gemstone. The gemstone detection method further includes generating a trained neural network by training an untrained neural network using the set of training pictures and a set of training sketches of edges of the facets of the gemstone generated from the set of training pictures and using the trained neural network to iteratively generate machine-generated drawings from the set of training pictures. Each of the machine-generated drawings identifies edges of the facets of the gemstone. In addition, the gemstone detection method includes combining the set of machine-generated drawings into a three-dimensional model.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06N 20/00 - Machine learning
• G06N 3/08 - Learning methods

Abstract

Embodiments of the present invention disclose a method, computer program product, and system for mapping one or more inclusions in a mineral crystal. A set of image data associated with the mineral crystal is receiving. The received set of image data is analyzed. One or more inclusions associated with the mineral crystal is identified based on the analyzed image data. The identified one or more inclusions of the mineral crystal are mapped to a tree structure representing the surface of the mineral crystal. The mapped one or more inclusions are encoded as a chain-code associated with the mineral crystal. A radial distance between a center of mass value of the mineral crystal and a center of mass value of the identified one or more inclusions is calculated and a mineral crystal fingerprint is generated.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06T 7/11 - Region-based segmentation
• G06T 7/13 - Edge detection
• G06T 15/20 - Perspective computation
• G06T 7/60 - Analysis of geometric attributes
• G06T 7/55 - Depth or shape recovery from multiple images
• G06T 3/60 - Rotation of whole images or parts thereof

Abstract

Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
• G01N 21/64 - FluorescencePhosphorescence
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/87 - Investigating jewels

Abstract

The embodiments disclosed herein relate to the examination of gemstones including diamonds, both cut/polished and rough, using the technology of Resonant Ultrasound Spectroscopy. The resonant frequencies are obtained by mechanically causing the stone to vibrate using a swept sine oscillator, sensing the resonance vibrations, and displaying the spectrum to yield a pattern describing the stone. The resonance fingerprints can be used to both track an individual stone to verify its integrity or to grade a rough stone to establish potential value.

IPC Classes  ?

• G01N 29/12 - Analysing solids by measuring frequency or resonance of acoustic waves
• G01N 29/24 - Probes
• G01N 29/46 - Processing the detected response signal by spectral analysis, e.g. Fourier analysis
• G01N 29/44 - Processing the detected response signal

Abstract

Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 1/28 - Preparing specimens for investigation
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass

Abstract

Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

IPC Classes  ?

• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• F25D 3/10 - Devices using other cold materialsDevices using cold-storage bodies using liquefied gases, e.g. liquid air
• G01N 21/87 - Investigating jewels
• G01N 25/18 - Investigating or analysing materials by the use of thermal means by investigating thermal conductivity

Abstract

A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

IPC Classes  ?

• G06F 7/00 - Methods or arrangements for processing data by operating upon the order or content of the data handled
• G06F 16/22 - IndexingData structures thereforStorage structures
• G01N 21/87 - Investigating jewels

Abstract

Resonant Ultrasound Spectroscopy (RUS) is applied to diamonds (both cut/polished gemstones and rough diamonds) to yield a digital fingerprint from which the stone may be authenticated and sorted according to the structural quality. Diamonds are mined as rough stones from which they undergo examination to determine their value as being gem, or of two different industrial qualities. Fewer than 25% of mined diamonds are worthy of cutting and polishing to yield gems for jewelry. About 40% of the remaining population still have value as industrial diamonds for machine tools, and the rest is ground into dust to provide coatings for grinding applications. Rough stones exist in two conditions being coated and uncoated. The coated stones have a layer of polycrystalline diamond, different from the predominant crystal structure, rendering them opaque. This interferes with optical inspection, as any cracks, or inclusions can't be seen. RUS provides a reliable sorting and fingerprinting system for both cut/polished stones as well as rough diamonds of sufficient structural quality to yield a spectral signature. As high value items, diamonds are shipped around the world, and but sometimes thefts occur. RUS yields a digital fingerprint allowing the identity of an individual stone to be verified upon recovery.

IPC Classes  ?

• G01N 29/12 - Analysing solids by measuring frequency or resonance of acoustic waves
• G01N 29/24 - Probes
• G01N 29/46 - Processing the detected response signal by spectral analysis, e.g. Fourier analysis
• G01N 29/44 - Processing the detected response signal

Abstract

Some examples herein include systems and methods of creating standards of gemstones of various classifications, which may display certain characteristics of the various classifications when excited by ultraviolet radiation and fluoresce in response. In some examples, a set of standards are created using fluorescent material, filters, and a radiation source to compare against a sample gemstone.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/93 - Detection standardsCalibrating

Abstract

A computer-based system and method for taking clarity measurements of a gem, and a computer-readable medium having computer-executable instructions, are provided and include receiving a pixilated image of a gem and identifying pixels representing an inclusion. The method and medium further include determining characteristics of the inclusion as a function of the pixels representing the inclusion, and providing a clarity grade based upon the determined characteristics. Also provided is a method for mapping a gem, and a computer-readable medium having computer-executable instructions, which include receiving a pixilated image of a gem having facet edges, and identifying pixels representing the facet edges. The method and medium further include generating a diagram of the gem, such that the diagram is a function of the pixels representing the facet edges, and superimposing the diagram onto the pixilated image.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G01N 21/87 - Investigating jewels
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/87 - Investigating jewels
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass

Abstract

Embodiments of the present invention disclose a method, computer program product, and system for mapping one or more inclusions in a mineral crystal. A set of image data associated with the mineral crystal is receiving. The received set of image data is analyzed. One or more inclusions associated with the mineral crystal is identified based on the analyzed image data. The identified one or more inclusions of the mineral crystal are mapped to a tree structure representing the surface of the mineral crystal. The mapped one or more inclusions are encoded as a chain-code associated with the mineral crystal. A radial distance between a center of mass value of the mineral crystal and a center of mass value of the identified one or more inclusions is calculated and a mineral crystal fingerprint is generated.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06T 7/11 - Region-based segmentation
• G06T 7/13 - Edge detection
• G06T 15/20 - Perspective computation
• G06T 7/60 - Analysis of geometric attributes
• G06T 3/60 - Rotation of whole images or parts thereof

Abstract

Resonant Ultrasound Spectroscopy (RUS) is applied to diamonds (both cut/polished gemstones and rough diamonds) to yield a digital fingerprint from which the stone may be authenticated and sorted according to the structural quality. Diamonds are mined as rough stones from which they undergo examination to determine their value as being gem, or of two different industrial qualities. Fewer than 25% of mined diamonds are worthy of cutting and polishing to yield gems for jewelry. About 40% of the remaining population still have value as industrial diamonds for machine tools, and the rest is ground into dust to provide coatings for grinding applications. Rough stones exist in two conditions being coated and uncoated. The coated stones have a layer of polycrystalline diamond, different from the predominant crystal structure, rendering them opaque. This interferes with optical inspection, as any cracks, or inclusions can't be seen. RUS provides a reliable sorting and fingerprinting system for both cut/polished stones as well as rough diamonds of sufficient structural quality to yield a spectral signature. As high value items, diamonds are shipped around the world, and but sometimes thefts occur. RUS yields a digital fingerprint allowing the identity of an individual stone to be verified upon recovery.

IPC Classes  ?

• G01N 29/12 - Analysing solids by measuring frequency or resonance of acoustic waves
• G01N 29/24 - Probes
• G01N 29/46 - Processing the detected response signal by spectral analysis, e.g. Fourier analysis
• G01N 29/44 - Processing the detected response signal

Abstract

A cooling apparatus includes a container configured to contain a coolant within a space. The apparatus further includes a cooling block positioned substantially within the space and having a high heat capacity such that the space not occupied by the cooling block is filled with a coolant to a level at or below the top of the cooling block, and a placement structure having high thermal conductivity positioned on top of the cooling block and outside of the space. A method for cooling an object is also provided, which includes inserting a coolant into a container configured to contain the coolant within a space, and placing the object on a placement structure outside the space. For this method, the placement structure has a high thermal conductivity and is coupled to a cooling block, the cooling block having a high heat capacity and positioned substantially within the space.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• B01L 7/00 - Heating or cooling apparatusHeat insulating devices

Abstract

A computer-based system and method for taking clarity measurements of a gem, and a computer-readable medium having computer-executable instructions, are provided and include receiving a pixilated image of a gem and identifying pixels representing an inclusion. The method and medium further include determining characteristics of the inclusion as a function of the pixels representing the inclusion, and providing a clarity grade based upon the determined characteristics. Also provided is a method for mapping a gem, and a computer-readable medium having computer-executable instructions, which include receiving a pixilated image of a gem having facet edges, and identifying pixels representing the facet edges. The method and medium further include generating a diagram of the gem, such that the diagram is a function of the pixels representing the facet edges, and superimposing the diagram onto the pixilated image.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G01N 21/87 - Investigating jewels

Abstract

Disclosed herein are devices and methods for screening gemstones (e.g., diamonds). In particular, the disclosed method and system can efficiently and accurately identify and distinguish genuine earth-mined gemstones (e.g., diamond) from synthetic and treated gemstones or gemstone simulants.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/64 - FluorescencePhosphorescence
• G01J 3/28 - Investigating the spectrum

Abstract

Disclosed herein are devices and methods for screening gemstones (e.g., diamonds). In articular, the disclosed method and system can efficiently and accurately identify and distinguish genuine earth-mined gemstones (e.g., diamond) from synthetic and treated gemstones or gemstone simulants.

IPC Classes  ?

• G01N 21/64 - FluorescencePhosphorescence
• A44C 17/00 - Gems or the like
• A44C 19/00 - Devices for preventing pilfering of watches or jewellery
• G01N 21/87 - Investigating jewels
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G09B 5/02 - Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip

Abstract

Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

IPC Classes  ?

• G06F 7/00 - Methods or arrangements for processing data by operating upon the order or content of the data handled
• G06F 16/22 - IndexingData structures thereforStorage structures
• G01N 21/87 - Investigating jewels

Abstract

Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
• G01N 21/87 - Investigating jewels
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
• G01N 21/64 - FluorescencePhosphorescence
• G01N 21/87 - Investigating jewels
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass

Abstract

Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass

Abstract

Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

IPC Classes  ?

• G01N 21/87 - Investigating jewels
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 21/64 - FluorescencePhosphorescence

Abstract

A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

IPC Classes  ?

• G06F 7/00 - Methods or arrangements for processing data by operating upon the order or content of the data handled
• G01N 21/87 - Investigating jewels

Abstract

A reflected dark field structure includes a bottom plate, a support tube, a light unit, a diffuser structure, and a reflector unit that provides reflected dark field illumination, such that a gem held by the support tube and surrounded by the diffuser structure is illuminated and viewable through an aperture in the reflector unit. A method for imaging and analyzing a gem includes placing the gem onto a support tube where it is illuminated with dark field and reflected dark field illumination, and viewing the gem via an aperture located on a top reflector unit, which provides a top cover for the gem. Furthermore, a method and apparatus for obtaining images of a gem includes a dark field stage, a reflector unit, and an image-acquiring device, such that a gem placed in the dark field stage is illuminated, and such that the reflector unit covers the dark field stage and provides reflected dark field illumination, and such that the image-acquiring device is directed towards an aperture in the reflector unit.

IPC Classes  ?

• G01N 21/01 - Arrangements or apparatus for facilitating the optical investigation

Abstract

A reflected dark field structure includes a bottom plate, a support tube, a light unit, a diffuser structure, and a reflector unit that provides reflected dark field illumination, such that a gem held by the support tube and surrounded by the diffuser structure is illuminated and viewable through an aperture in the reflector unit. A method for imaging and analyzing a gem includes placing the gem onto a support tube where it is illuminated with dark field and reflected dark field illumination, and viewing the gem via an aperture located on a top reflector unit, which provides a top cover for the gem. Furthermore, a method and apparatus for obtaining images of a gem includes a dark field stage, a reflector unit, and an image-acquiring device, such that a gem placed in the dark field stage is illuminated, and such that the reflector unit covers the dark field stage and provides reflected dark field illumination, and such that the image-acquiring device is directed towards an aperture in the reflector unit.

IPC Classes  ?

• G02B 21/06 - Means for illuminating specimen
• G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light

Abstract

A cooling apparatus includes a container configured to contain a coolant within a space. The apparatus further includes a cooling block positioned substantially within the space and having a high heat capacity such that the space not occupied by the cooling block is filled with a coolant to a level at or below the top of the cooling block, and a placement structure having high thermal conductivity positioned on top of the cooling block and outside of the space. A method for cooling an object is also provided, which includes inserting a coolant into a container configured to contain the coolant within a space, and placing the object on a placement structure outside the space. For this method, the placement structure has a high thermal conductivity and is coupled to a cooling block, the cooling block having a high heat capacity and positioned substantially within the space.

IPC Classes  ?

• F28F 7/00 - Elements not covered by group , , or
• G01N 21/87 - Investigating jewels
• B01L 7/00 - Heating or cooling apparatusHeat insulating devices

Abstract

A computer-based system and method for taking clarity measurements of a gem, and a computer-readable medium having computer-executable instructions, are provided and include receiving a pixilated image of a gem and identifying pixels representing an inclusion. The method and medium further include determining characteristics of the inclusion as a function of the pixels representing the inclusion, and providing a clarity grade based upon the determined characteristics. Also provided is a method for mapping a gem, and a computer-readable medium having computer-executable instructions, which include receiving a pixilated image of a gem having facet edges, and identifying pixels representing the facet edges. The method and medium further include generating a diagram of the gem, such that the diagram is a function of the pixels representing the facet edges, and superimposing the diagram onto the pixilated image.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G01N 21/87 - Investigating jewels

Abstract

A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

IPC Classes  ?

• G06F 7/00 - Methods or arrangements for processing data by operating upon the order or content of the data handled