Method and system for prediction the color of gemstones
OwnerGershon Altmaninventor
Life of this patent
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Abstract
Predicting a first color of a gemstone to be cut to have a first geometry, from an uncut gemstone having a second color and a second geometry, is performed by means of a system comprising gemstone-mapping device for measuring the second geometry of the uncut gemstone, a spectral measurement device for measuring the second color of the uncut gemstone; and a processor adapted to determine an absorption coefficient of the uncut gemstone's material based on data from the gemstone-mapping and the spectral measurement devices, and on calculations relating to behavior of light in the uncut gemstone. The processor is adapted to deduce the first color based on the first geometry, the deduced coefficient and calculations relating to behavior of light in the cut gemstone.
Claims29
A method of predicting a first color of a gemstone to be cut, to have a first geometry, from an uncut gemstone having a second color and a second geometry including:
- (i) determining an absorption coefficient of the uncut gemstone's material based on said second color and second geometry of the uncut gemstone, using calculations relating to behavior of light in said uncut gemstone;
- and
- (ii) deducing said first color of the cut gemstone based on the absorption coefficient determined in step (i), and on said first geometry, using calculations relating to the behavior of light in said cut gemstone.
A gemstone color prediction system for predicting a first color of a gemstone to be cut, to have a first geometry, from an uncut gemstone having a second color and a second geometry, the system comprising:
- (a) a gemstone-mapping device for measuring said second geometry of the uncut gemstone;
- (b) a spectral measurement device for measuring said second color of the uncut gemstone;
- and
- (c) a processor adapted to determine an absorption coefficient of the uncut gemstone's material based on data from said gemstone-mapping and said spectral measurement devices, and on calculations relating to behavior of light in said uncut gemstone, the processor being further adapted to deduce said first color based on said first geometry, the deduced coefficient and calculations relating to behavior of light in said cut gemstone.
A method of deducing an absorption coefficient for an object having a geometry and color including:
- (i) measuring said geometry of the object;
- (ii) measuring said color of the object;
- and
- (iii) deducing the absorption coefficient, based on the data from the preceding steps and calculations relating to behavior of light in said object.
Dependencies are inferred from the claim text.