Cut for gemstone

US11382392B2 · kind B2 · utility

Assignee

• D. Swarovski KG · AT

Inventors

• Christian Loinger · Brixlegg, AT
• Günther Blasbichler · Innsbruck, AT

Key dates

• Filing date: Oct 9, 2018
• Grant date: Jul 12, 2022
• Expiry date: Oct 9, 2038

Classification

• Technology area (CPC —): General

Abstract

The invention relates to a gemstone cut, comprising a crown having a flat table and main crown facets (10-12) being arranged around the table (1) and being inclined relative to the table, a girdle (5) at which the gemstone has its largest transverse dimension, and a pavilion adjoining the girdle from below the girdle and having main pavilion facets (7) 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.