May 31, 2026VTG MODERNIST BRUTALIST 18K YELLOW GOLD AUSTRALIAN BLACK OPAL DIAMOND RING 28.7GEst. $7,650-$8,550$6,300Modern JewelryValley Village, CA
Buy NowPlatinum Ring with 3.47ctw Black Opal and Trillion Cut Diamond Accents$2,310(13 bids)BidhausNew York, NY
4 days LeftOpal and Black Onyx Cocktail Ring in 14k Yellow Gold Twisted FrameEst. $2,846-$3,201$810Diamond DepotNew York, NY
Buy Now14k Yellow Gold Arrowhead Ring with Black Opal and Diamonds$7,440(18 bids)Mynt AuctionsNew York, NY
Buy NowVintage GIA Certified 6.72ctw Black Opal Diamond Halo Platinum Ring$7,520Diamond DepotNew York, NY
Buy NowGIA Certified 2.72ctw Black Opal Platinum Cocktail Ring with Diamonds$4,710Diamond DepotNew York, NY
Buy NowPlatinum 5.50ct GIA Australian Black Opal Diamond Cocktail Ring$9,230Diamond DepotNew York, NY
Buy NowPlatinum GIA Certified 2.33ct Black Opal Baguette Diamond Cocktail Ring$4,730Diamond DepotNew York, NY
Buy NowVintage Platinum 1.66ctw GIA Black Opal & Diamond Cocktail Ring$2,890Diamond DepotNew York, NY
4 days Left14K Yellow Gold Mosaic Opal Black Onyx Wide Band Ring Size 11Est. $2,054-$2,311$670Diamond DepotNew York, NY
Buy NowPlatinum GIA Certified 4.04ctw Black Opal Diamond Ballerina Ring$3,820Diamond DepotNew York, NY
May 31, 2026BAGLEY & HOTCHKISS 18K YELLOW GOLD BLACK OPAL INLAY & DIAMOND RING 12.5GEst. $3,901-$4,360$3,200Modern JewelryValley Village, CA
Buy NowPlatinum GIA Certified 2.27ctw Black Opal Diamond Cocktail Ring$3,820Diamond DepotNew York, NY
May 24, 2026VINTAGE 10K GOLD RING, NATURAL OPAL AND BLACK PORCELAIN INLAY ( SIZE: 6 ) 11.3GEst. $2,039-$2,279$1,675Modern JewelryValley Village, CA
Ends in 1d 11hheavy / chunky 14ct white gold black opal and diamond signet style ringEst. £750-£800£560Banks Jewellery Auctions Gloucestershire
4 days LeftPlatinum 5.50ct GIA Australian Black Opal Diamond Cocktail RingEst. $9,477-$12,320$7,200BidhausNew York, NY