Buy NowPlatinum 5.50ct GIA Australian Black Opal Diamond Cocktail Ring$9,230Diamond DepotNew York, NY
Jul 05, 2026VINTAGE 14K WHITE GOLD 3.75CT. NATURAL BLACK ETHIOPIAN OPAL & DIAMOND RINGEst. $4,675-$5,225$3,850Modern JewelryValley Village, CA
7 hrs LeftGIA Certified Platinum Black Opal Diamond Cluster Ring Size 6.5Est. $11,514-$12,895$4,250Diamond DepotNew York, NY
5 days LeftSz7/Sz9/10g Sterling Silver Onyx & Opal Inlay Ring LotEst. $10-$250$20(2 bids)Sphere Auctions LLCSun Prarie, WI
Jul 02, 2026GIA Black Opal 18k Yellow Gold Cocktail Ring with Diamond SidesEst. $3,432-$4,461$100BidhausNew York, NY
4 days LeftGIA Certified 2.72ctw Black Opal Platinum Cocktail Ring with DiamondsEst. $4,836-$6,286$100BidhausNew York, NY
Jul 02, 20261.48 Carat Black Opal and Diamond Platinum Ring Size 6Est. $4,685-$5,247$1,375Diamond DepotNew York, NY
Buy NowGIA Certified 2.72ctw Black Opal Platinum Cocktail Ring with Diamonds$4,710Diamond DepotNew York, NY
Jul 02, 2026Opal and Black Onyx Cocktail Ring in 14k Yellow Gold Twisted FrameEst. $1,729-$2,247$100BidhausNew York, NY
Jul 03, 2026Opal and Black Onyx Cocktail Ring in 14k Yellow Gold Twisted FrameEst. $2,939-$3,292$860Diamond DepotNew York, NY
Jul 03, 2026GIA 2.83ct Black Opal and Diamond Platinum Ring Size 8Est. $5,005-$6,506$100BidhausNew York, NY
Buy NowPlatinum GIA Certified 4.04ctw Black Opal Diamond Ballerina Ring$3,820(20 bids)Mynt AuctionsNew York, NY
6 hrs LeftGIA Platinum Black Opal Diamond Cocktail Ring Size 6.5Est. $4,862-$6,320$2,250BidhausNew York, NY
Jul 02, 2026Platinum GIA Certified 2.93ct Black Opal Diamond Halo RingEst. $3,588-$4,664$100BidhausNew York, NY
Buy Now14K Yellow Gold Mosaic Opal Black Onyx Wide Band Ring Size 11$1,220(17 bids)Mynt AuctionsNew York, NY
Jul 05, 2026GIA certified Australian black opal diamond platinum ring size 6.5Est. $5,679-$6,361$2,100Diamond DepotNew York, NY