1 day LeftPlatinum Cocktail Ring With Large Boulder Opal and Diamond AccentsEst. $4,394-$5,712$100Mynt AuctionsNew York, NY
Jul 05, 2026Platinum 2.29ctw Black Boulder Opal Diamond Cluster Cocktail RingEst. $2,002-$2,602$100BidhausNew York, NY
Jul 06, 2026VINTAGE RING BOULDER OPAL MEXICO RICHARD GUAD BAND SIZE 8 STERLING SILVER WOMENEst. $422-$471$345Modern JewelryValley Village, CA
Jul 09, 2026Womens Vintage Sterling Silver Southwest Boulder Blue Opal RingEst. $150-$250$50Mannys JewelryHAGERSTOWN, MD
Jul 12, 202614K GOLD RING WITH NATURAL BOULDER OPAL, 0.03CTS OF DIAMOND ( SIZE: 8.25 ) 6GEst. $2,550-$2,850$2,100Modern JewelryValley Village, CA
Buy Now18k Yellow Gold Boulder Opal Diamond Pendant Necklace with Rope Chain$3,710BidhausNew York, NY
Buy NowPlatinum Cocktail Ring With Large Boulder Opal and Diamond Accents$4,280Diamond DepotNew York, NY
Buy NowVintage Platinum 1.43ct GIA Oval Boulder Opal Ring with Diamond Accents$2,660(25 bids)BidhausNew York, NY
1 day Left18k Yellow Gold Boulder Opal Diamond Pendant Necklace with Rope ChainEst. $6,475-$7,252$2,900Diamond DepotNew York, NY
4 days LeftVintage Platinum 1.43ct GIA Oval Boulder Opal Ring with Diamond AccentsEst. $4,641-$5,197$1,525Diamond DepotNew York, NY
4 days LeftPlatinum 2.29ctw Black Boulder Opal Diamond Cluster Cocktail RingEst. $3,403-$3,811$1,525Diamond DepotNew York, NY
Jul 06, 2026BOULDER OPAL NAVAJO RING SIZE 5.25 STERLING SILVER WOMENEst. $320-$357$260Modern JewelryValley Village, CA
11 hrs Left5.07 Carats Iridescent Multicolor Boulder Opal - Natural Australian Stone, 56XMEst. $70-$140$5Lazo HeritageThung Wat Don, Sathorn, Bangkok
1 day Left18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent DiamondsEst. $13,250-$17,025$50Riverside GalleriesArcadia, CA
5 days Left18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent DiamondsEst. $13,250-$17,025$50Riverside GalleriesArcadia, CA
6 days LeftPlatinum Pendant Necklace with Boulder Opal and Diamond Accents Adjustable ChainEst. $2,964-$3,853$2,250BidhausNew York, NY
1 day LeftANTIQUE 14K YELLOW GOLD NATURAL AUSTRALIAN FIRE BOULDER OPAL HALO RINGEst. $842-$941$690Modern JewelryValley Village, CA
1 day LeftDESIGNER 10K YELLOW GOLD CABOCHON AUSTRALIAN BOULDER FIRE OPAL & DIAMOND RINGEst. $672-$751$550Modern JewelryValley Village, CA
Jul 12, 202614K GOLD RING WITH NATURAL BOULDER OPAL AND DIAMONDS (SIZE 6.25) 3.5 GRAMEst. $1,273-$1,423$1,025Modern JewelryValley Village, CA
Buy NowPlatinum Pendant Necklace with Boulder Opal and Diamond Accents Adjustable Chain$2,890Diamond DepotNew York, NY
Jul 06, 202614k Yellow Gold Opal and Diamond Band Ring Size 7.5Est. $3,823-$4,282$1,150Diamond DepotNew York, NY
Jul 06, 2026BOULDER OPAL RING BOHO SIZE 5.25 STERLING SILVER WOMENEst. $184-$205$150Modern JewelryValley Village, CA
6 days Left18k Yellow Gold Boulder Opal Diamond Pendant Necklace with Rope ChainEst. $3,809-$4,951$1,750BidhausNew York, NY
Buy NowPlatinum Pendant Necklace with Boulder Opal and Diamond Accents Adjustable Chain$2,890BidhausNew York, NY