10 KT Gold & Black Onyx Signet Ring
Updated August 18, 2026
This auction ended on August 26, 2026.
See upcoming auctions from Amber Door Estate Sales Inc. or current jewelry & watches auctions.
| Lot number | 131 |
| Category | Jewelry & Watches |
| Auction | Art, Jewelry, Antiques & Estate Auction |
| Date | August 26, 2026 at 8:05 PM EDT |
| Auction house | Amber Door Estate Sales Inc. |
| Location | Niagara-on-the-Lake |
A 10 carat yellow gold signet ring, set with a central cushion-cut black onyx cabochon. The stone is bezel-set within a rectangular head, flanked by stepped and grooved shoulders that taper to a plain band. The interior of the shank is stamped with the gold purity mark 10K and the maker mark RUB. Gross weight: 4.88 g. Condition: The ring is in good used condition, showing signs of regular wear including surface scratches to the gold and small nicks to the surface of the onyx stone.
