Method of cutting gemstones and product
US5072549A · kind A · utility
30Cited by
45References
16Claims
0Family size
Inventor
Key dates
| Filing date | Sep 5, 1989 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Sep 5, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B9/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of cutting facets on a gemstone to form a pentagonal shaped gem product such that the cut facets produce a five-legged star to appear beneath the gem table. The gem product produced by this method comprises a pavilion having thirty facets and fifty edges, a crown having twenty-one facets and thirty-five facets, and a five sided girdle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.