D. Swarovski Kg

Karlheinz Eder

Maik Froehlich

Guenther Blasbichler

Markus Sauer

Günther Blasbichler

A gemstone with a chaton cut has tapering facets of a crown adjoin a flat table all the way round inclined relative to the table. The facets extend as far as a rondist at which the gemstone has the largest transverse dimension. A pavilion of facets, preferably terminating at a point, adjoins below the rondist. The gemstone is at least partially made of glass, and the crown angle (&#x3b1;) is between 40.5&#xb0; and 42.5&#xb0;.

Gemstone with a chaton cut

An assembly for analyzing a light pattern caused by refraction and reflection at a precious stone, comprising a light source for illuminating the precious stone, a retaining device for retaining the precious stone, a diffusing screen for imaging the light pattern, and a camera for recording the light pattern imaged on the diffusing screen. The assembly comprises a semi-transmitting optical element for deflecting, in a direction of the precious stone, light emitted by the light source and transmitting the light refracted and reflected at the precious stone.

Growing community of inventors

Buch in Tirol, Austria

Karlheinz Eder