Brilliant cut diamond
US6698239B2 · kind B2 · utility
16Cited by
19References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Feb 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA44C17/001
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A brilliant-cut gemstone having a pavilion, girdle, and crown is disclosed. The pavilion of the gemstone has 56 facets: specifically, 8 lower diamond-shaped facets, 16 middle kite-shaped facets, and 32 upper triangular facets. The girdle and table may be formed of one or more facets. In one preferred embodiment, the total number of crown facets (excluding the table) is 56, making a total of 114 facets (including the table). In another preferred embodiment, the total number of crown facets (excluding the table) is 64, making a total of 122 facets (including the table).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.