Patent ID: 9678017
Date: 2017-06-13
CPC Classifications: G01N,G09B

Claim:
1. A system for evaluating a gemstone having a facet, at which the evaluation is to be performed, comprising: a. a platform configured for holding a gemstone thereon so that its said facet is exposed for being viewed along a viewing axis; b. an illumination system, comprising a surface facing the platform, wherein the surface surrounds said viewing axis and is configured to: c. a rotation mechanism for rotating one of the platform and the light pattern relative to the other, for providing different rotational positions of the light pattern relative to the platform; d. a viewing hole in the surface, via which said viewing axis passes, configured for viewing therethrough at least said facet of the gemstone at least in said positions; and e. an imaging system configured for obtaining, via said viewing hole, images of the gemstone when illuminated by said light in said positions, so as to allow subsequent use of said images for the evaluation of at least one of the following optical properties of the gemstone: brilliance, fire, scintillation and symmetry.