GB577232A - Improvements relating to precious stones - Google Patents
Improvements relating to precious stonesInfo
- Publication number
- GB577232A GB577232A GB5256/44A GB525644A GB577232A GB 577232 A GB577232 A GB 577232A GB 5256/44 A GB5256/44 A GB 5256/44A GB 525644 A GB525644 A GB 525644A GB 577232 A GB577232 A GB 577232A
- Authority
- GB
- United Kingdom
- Prior art keywords
- girdle
- facets
- stone
- crown
- precious
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C17/00—Gems or the like
- A44C17/001—Faceting gems
Abstract
577,232. Gems. GOLDSTEIN, E. March 21, 1944, No. 5256. Convention date, May 5, 1943. [Class 43] The girdle 5 of a precious or semi-precious stone, such as a diamond or emerald, between a facetted crown 1 and a facetted pavilion 2 comprises substantially flat facets 8 at least as great in number as the number of crown facets 6. The girdle facets 8 are preferably polygonal and intersect to form edges 9 which provide a firm grip for the material of the setting and prevent rotation of the stone in its setting. The girdle facets 8 may be equal in length, with about two and half in number to each crown facet adjoining the girdle. The girdle 5 may, as shown, be parallel to the axis, or be inclined thereto preferably upwardly and inwardly at an angle of 10-30‹ from the vertical, so as to present the girdle facets to view from the front of the stone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US577232XA | 1943-05-05 | 1943-05-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB577232A true GB577232A (en) | 1946-05-09 |
Family
ID=22012355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5256/44A Expired GB577232A (en) | 1943-05-05 | 1944-03-21 | Improvements relating to precious stones |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB577232A (en) |
-
1944
- 1944-03-21 GB GB5256/44A patent/GB577232A/en not_active Expired
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