GIA Platinum Black Opal Diamond Cocktail Ring Size 7.5
Updated August 25, 2026
This auction ended on September 10, 2026.
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| Lot number | 0231Y |
| Estimate | $8,190 - $9,828 |
| Opening bid | $3,700 |
| Category | Jewelry & Watches |
| Auction | No Reserve Lab Grown Loose Diamonds & Jewelry |
| Date | September 10, 2026 at 8:00 AM EDT |
| Auction house | Diamond Depot |
| Location | New York, New York |
GIA Platinum Black Opal Diamond Cocktail Ring Size 7.5 This platinum cocktail ring features a large natural black opal as its centerpiece, expertly cut in an oval cabochon shape and weighing 5.22
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