Jul 05, 2026GIA certified Australian black opal diamond platinum ring size 6.5Est. $5,679-$6,361$2,100Diamond DepotNew York, NY
Jul 07, 2026Antique Edwardian Gold Platinum GIA Black Opal Diamond Halo RingEst. $27,669-$30,989$9,300Diamond DepotNew York, NY
Jul 13, 2026Natural Fire Red Black Opal Gemstones 1.66 Ct. Pear Cabochon Shape 11 x 8.3 Mm.Est. $94-$148$1Treasure of Gems & JewelryLake Charles, LA
Jul 04, 202614k Yellow Gold Arrowhead Ring with Black Opal and DiamondsEst. $12,972-$14,529$3,650Diamond DepotNew York, NY
5 days LeftPlatinum 5.50ct GIA Australian Black Opal Diamond Cocktail RingEst. $16,110-$18,044$4,850Diamond DepotNew York, NY
5 days LeftPlatinum GIA Certified 2.27ctw Black Opal Diamond Cocktail RingEst. $6,652-$7,450$3,000Diamond DepotNew York, NY
Jul 08, 20264.32ct Multicolor Black Oval Opal GemstoneEst. $275-$350$185Weatherham Estate TreasuresCobourg, ON
Jul 05, 2026Antique 10k Yellow Gold GIA Certified 3.40ct Black Opal RingEst. $8,199-$9,182$3,100Diamond DepotNew York, NY
Buy NowGIA Certified 2.72ctw Black Opal Platinum Cocktail Ring with Diamonds$4,710Diamond DepotNew York, NY
8 hrs LeftPlatinum Ladies Ring with 4.02ct Black Opal and 0.72tcw Adjacent DiamondsEst. $10,250-$14,550$50Riverside GalleriesArcadia, CA
3 days LeftPlatinum Ladies Ring with 4.02ct Black Opal and 0.72tcw Adjacent DiamondsEst. $10,250-$14,550$50Riverside GalleriesArcadia, CA
2026Vintage Tibetan Silvered Gilt Mixed Stone Inlay Rings Lot, 24ASSee Sold PriceLazo HeritageThung Wat Don, Sathorn, Bangkok
Buy NowPlatinum GIA Certified 5.48ct Blue Black Opal Ring with Baguette Diamonds$2,890(18 bids)BidhausNew York, NY
Live NowVintage Tibetan Silvered Mixed Lapis Mineral Stone Inlay Rings Lot, 22ASEst. $50-$100$5(1 bid)Lazo HeritageThung Wat Don, Sathorn, Bangkok
Buy NowPlatinum GIA Certified 2.27ctw Black Opal Diamond Cocktail Ring$3,820(15 bids)BidhausNew York, NY
Jul 02, 2026Platinum GIA Certified 3.65ct Black Opal Diamond Halo RingEst. $11,514-$12,895$5,200Diamond DepotNew York, NY
Buy NowPlatinum GIA Certified 5.48ct Blue Black Opal Ring with Baguette Diamonds$2,890Diamond DepotNew York, NY
6 days LeftPlatinum 2.29ctw Black Boulder Opal Diamond Cluster Cocktail RingEst. $3,403-$3,811$1,525Diamond DepotNew York, NY
5 days LeftPlatinum GIA Certified 1.30ctw Black Opal Diamond Cocktail RingEst. $3,823-$4,282$1,725Diamond DepotNew York, NY
Buy Now14K Yellow Gold Ring with Australian Black Opal Size 6$3,080(12 bids)Mynt AuctionsNew York, NY
Buy NowPlatinum 2.29ctw Black Boulder Opal Diamond Cluster Cocktail Ring$1,950Diamond DepotNew York, NY