| Metal | 9k Yellow Gold |
| Size | 7 1/4 |
| Width | Top: 13.60mm, Band: 4.50mm |
| Gemstone | Flat Cabochon Cut Black Onyx |
| Carat | 3.50ct |
The hallmarks on this piece indicate that it was assayed in Birmingham, UK, in 1963.
1963 Birmingham Black Onyx Cocktail Ring | 3.50ct | SZ 7.25 |
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