14k white gold, black opal and diamond ring containing a natural black opal cabochon weighing approximately 19.05 cts., showing blue-green flash of color with even distribution, measuring approximately 28.20 x 19.94 x 6.06 mm, surrounded by a halo of round brilliant-cut diamonds weighing approximately 1.08 ct., SI clarity, H-I color; ring size 7, wt. 7.7 dwts.
Black opal is considered the most rare of all opal varieties and can only be found at Lightning Ridge, Australia.
Scratches to top of cabochon.
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| Estimate | $7,000 - $10,000 |
| Starting Bid | $5,000 |
