The Vintage Black Onyx and Diamond Ring
Sold September 2025
This elaborate ring bears a rectangular black onyx panel with a brilliant cut diamond in its centre, for 0.43ct. A trefoil design is both above and below the diamond, which adds dimension and flair to the design.
The onyx has a fine beaded edge of white metal which joins to polished solid walls. The shoulders feature a white metal engraved navette to both sides, which leads into a plain band.
This ring, circa 1920-1940 is stamped for 9ct to the band and 18ct to the back panel. It is in good condition with light marks commensurate with age. There is a small scratch on the onyx panel, which has been photographed and is barely noticeable when worn.
Please find the Expert Report, (see the end image in the gallery) for more detailed information.
Size R UK/AU, 8⅝ US/CA, 59 FR/RU, 18½ DE
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The Details
- Era
- Vintage, circa 1920-1940
- Metal
- Tests as 9ct Yellow Gold
- Weight
- 8.10g
- Head Size
- Approximately 19.44mm x 16.22mm
- Size
- O — US 7¼ · EU 55.0
- Condition
- Good; Small scratch to the onyx panel as photographed
The Gemstones
Estimated diamond colour: H-I
Estimated diamond clarity: SI1
Why We Love It
- Stunning art deco style
- Sparkling brilliant cut diamond
- Detailed split shoulders
