3pc 14.9ctw Black and White Opal Loose GemstonesEstimate: $90 - $200Starting Bid$20Hollywood, FLLion and Unicorn4.7(2.6k)
Natural Fire Red Black Opal 2.05 Ct Oval Cabochon 10.6x8.4 mm Treated Ethiopia Loose Gemstone GiftEstimate: $106 - $166Starting Bid$1Lake Charles, LATreasure of Gems & Jewelry4.4(277)
4.42 ct Australian Black Opal Oval Cabochon, Multicolor Play-of-ColorEstimate: $3,000 - $6,000Current Bid - 2 bids$200Owens Cross Roads, AL1111 Jewelry Store, LLC4.3(8)
Natural Fire Red Black Opal 1.60 Ct Oval Cabochon 10.9x8.4 mm Treated Ethiopia Loose Gemstone GiftEstimate: $87 - $137Starting Bid$1Lake Charles, LATreasure of Gems & Jewelry4.4(277)
Natural Quality 1 Black Opal Gemstones From Australian, Dimension 15x 14.5 mm, Weight 2.39 Ct, ShapeEstimate: $2,716 - $4,074Starting Bid$100Oxnard, CAABC Rugs Kilims, Inc.4.3(2)
Natural Red Black Opal 2.07 Ct Oval Cabochon 11.5x8.7 mm Treated Ethiopia Loose Gemstone GiftEstimate: $115 - $181Starting Bid$1Lake Charles, LATreasure of Gems & Jewelry4.4(277)
Group of Over 100 Assorted Loose GemstonesEstimate: $300 - $500Current Bid - 1 bid$100Branford, CTNew England Auctions - Fred Giampietro4.7(477)
Natural Fire Red Black Opal 1.64 Ct Marquise Cabochon 15x6.2 mm Treated Ethiopia Loose Gemstone GiftEstimate: $87 - $136Starting Bid$1Lake Charles, LATreasure of Gems & Jewelry4.4(277)
Natural Exceptional Quality Ethiopian 1 Piece Pear Shaped Black Opal Gemstone, Weight: 5.66, Gem118Estimate: $2,400 - $3,600Starting Bid$100Oxnard, CAABC Rugs Kilims, Inc.4.3(2)
1.13 Ct "Play of Colors" Natural Black Fire OpalEstimate: $75 - $150Current Bid - 1 bid$1Rajasthan, INFinest Gems Auction 4.6(135)
Natural Exceptional Quality Ethiopian 1 Piece Semicircle Shaped Blue-Black Opal Gemstone, Weight: 17Estimate: $2,400 - $3,600Starting Bid$100Oxnard, CAABC Rugs Kilims, Inc.4.3(2)
Buy NowNatural Fire Red Black Opal 1.39 Ct Oval Cabochon 9.8x8 mm Treated Ethiopia Loose Gemstone Gift$28Lake Charles, LATreasure of Gems & Jewelry4.4(277)
3.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 57SMEstimate: $30 - $60Starting Bid$15Sathorn, BangkokLazo Heritage4.4(28)
4.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 19SMEstimate: $40 - $80Starting Bid$20Sathorn, BangkokLazo Heritage4.4(28)
3.33ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 49SMEstimate: $30 - $60Starting Bid$15Sathorn, BangkokLazo Heritage4.4(28)
Natural Play Of Color Rainbow Fire Red Black Opal 1.30 Ct Oval Cabochon 12.8x8.7 mm Treated EthiopiaEstimate: $76 - $119Starting Bid$1Lake Charles, LATreasure of Gems & Jewelry4.4(277)
Buy NowNatural Fire Red Black Opal 1.66 Ct Pear Cabochon 11x8.3 mm Treated Ethiopia Loose Gemstone Gift$32Lake Charles, LATreasure of Gems & Jewelry4.4(277)
14K Yellow Gold Lightning Ridge Black Opal Bar BroochEstimate: $9,500 - $12,000Starting Bid$2,400Rockville, MDInterGem Premier Auctions
Buy NowRare 18k 1980 Paloma Picasso 7ct Black Opal Torsade Necklace Tiffany Co NG1760$18,610Lakeway, TXEco Estate Jewelry4.3(7)
1.64ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 55SMEstimate: $20 - $40Starting Bid$10Sathorn, BangkokLazo Heritage4.4(28)
2.06ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 7SMEstimate: $20 - $40Starting Bid$10Sathorn, BangkokLazo Heritage4.4(28)
2.50ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 71TGEstimate: $20 - $40Starting Bid$10Sathorn, BangkokLazo Heritage4.4(28)
2.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 60SMEstimate: $20 - $40Starting Bid$10Sathorn, BangkokLazo Heritage4.4(28)