Swarovski Aktiengesellschaft

D. Swarovski Kg

Christian Loinger

Guenther Blasbichler

Günther Blasbichler

The invention relates to a gemstone cut, comprising a crown having a flat table and main crown facets (-) being arranged around the table () and being inclined relative to the table, a girdle () at which the gemstone has its largest transverse dimension, and a pavilion adjoining the girdle from below the girdle and having main pavilion facets () around the girdle, whereby the number of the main pavilion facets is odd. The invention also relates to an article comprising a gemstone according to the invention and a method for improving the optical properties of a gemstone.

Cut for gemstone

A gemstone has a chaton cut, in which a crown adjoins a flat table and has facets that are inclined downwardly relative to the table all the way round, wherein the crown has main facets that extend substantially from the table as far as a girdle at which the gemstone has the largest transverse dimension. A pavilion of facets, preferably facets converging to a point, adjoins below the girdle. The gemstone consists preferably entirely of topaz, and the angle of the main facets relative to a cross-sectional face arranged parallel to the table is between 32.5&#xb0; and 34.5&#xb0;.

Chaton cut for a gemstone made of topaz

Gemstone

Object

Natural or artificial gemstone or ornamental object made of glass

Growing community of inventors

Kramsach, Austria

Christian Loinger