Gemstone evaluation system

Details Gemstone evaluation system Gemstone evaluation system

1995-01-23

1997-03-25

Gonzalez, Frank

Optics: measuring and testing

Crystal or gem examination

356425, G01W 2100, G01J 346, G01N 2187

Patent

active

056150059

ABSTRACT:
A device and method for grading gemstones. The device utilizes an band pass filter and detector array to obtain the spectral response of a complete image. The gemstone is illuminated in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct an composite image that is used to perform the grading of the gemstone. The device provides spectral photometric data for each individual pixel of the image, or any portion of the gemstone image.

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patent: 5414778 (1995-05-01), Schwartz et al.

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