Gemstones and methods for controlling the appearance thereof
US8069688B2 · kind B2 · utility
1Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2008 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Mar 17, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA44C17/001
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Methods of fabricating improved gemstones and gemstones thus obtained are described. Roughness is introduced on facets of a gemstone through application of nanometer and/or micrometer sized features, to provide the facets with a hazy white-colored appearance. Alternatively, millimeter-sized reflective features can be applied on the facets, to form a gemstone with improved scintillation or play of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.