Stunning Platinum Opal and Diamond Ring 40 Diamonds 4.00 Ct OpalDiamond Depot4.3(10)$2,3002 days Left
Platinum Setting with 3.33ct Opal and 0.55ct Diamond Ladies RingRiverside Galleries4.5(197)$502 days Left
14K WHITE GOLD RING WITH 1CT OPAL AND 0.66CTS DIAMONDS (SIZE: 6) 3.3 GRAMSModern Jewelry4.5(203)$1,475Feb 22, 2026
Platinum Setting with 3.33ct Opal and 0.55ct Diamond Ladies RingRiverside Galleries4.5(197)$505 days Left
14K WHITE GOLD RING WITH NATURAL OPAL AND 0.35CTW DIAMONDS (SIZE: 5.75)Modern Jewelry4.5(203)$1,800Feb 22, 2026
14K WHITE GOLD RING SET WITH NATURAL OPAL AND 0.06CTS DIAMONDS SIZE: 6.25 3.3GModern Jewelry4.5(203)$650Feb 08, 2026
Exquisite Platinum Opal 3.50 Ct Diamond Ring with 24 G-H DiamondsDiamond Depot4.3(10)$1,4502 days Left
18K WHITE GOLD OPAL RING WITH 0.30CTS OF DIAMONDS SIZE: 8 2.2GModern Jewelry4.5(203)$1,275Feb 22, 2026
Platinum Setting with 4.68ct Opal and 1.76ct Diamond Ladies RingRiverside Galleries4.5(197)$504 days Left
SoldTiffany & Co. Vintage 14K Gold & Platinum Opal Diamond RingVintage Tiffany & Co. 14K yellow gold and platinum ring, ring size approx. 6.5, centered by a large oval cabochon opal exhibiting exceptional play-of-color with vivid flashes of green, orange, red, anSee Sold Price
SoldArt Deco Platinum, Opal & Diamond RingArt Deco Platinum, Opal & Diamond Ringcentered on a prong set, oval black opal (14.97 x 10.48 x 5.03 mm) with three single cut diamonds on either side weighing approximately .11 total carat (H-I colorSee Sold Price
SoldPlatinum Opal Diamond RingPlatinum Weight 7.10g Opal Approx. 1.12ct Diamond Approx. 0.67ct RingSee Sold Price
SoldPLATINUM OPAL & DIAMOND RINGIntroducing the Platinum (PLAT) Natural Black Opal and Diamond Ring by Oscar Friedman, a symbol of exquisite beauty and luxury. This stunning ring features an oval cabochon-cut natural black opal gemsSee Sold Price
SoldPlatinum Opal Diamond RingPlatinum Weight 7.1g Opal Approx. 7ct Diamond Approx. 2ct RingSee Sold Price
SoldLadies Victorian Era 14k Platinum Opal & Diamond RingLadies antique Victorian era Opal and Diamond ring. Crafted of 14k gold and platinum. Set with a stunning Opal center stone measuring 11.6mm x 8.3mm. Surrounded by a halo of 18 European cut Diamonds wSee Sold Price
SoldPlatinum Opal Diamond RingPlatinum Opal Diamond Ring, featuring one heart shaped opal cabochon weighing approx. 2.30 carats, further adorned with 12 old European cut diamonds weighing a total of approx. 0.80 carat, marked: "PLSee Sold Price
SoldPlatinum, Opal & Diamond Ring 7.49ct, 10.5 Grams Jewelry Gemstone Natural Australian Diamondssize: 4, weight: 10.5 grams, material: platinum, gemstones: Australian opal: 7.35ct diamonds: 0.13ctw SI clarity G-H colorSee Sold Price
SoldAntique 18k Gold Platinum Opal Diamond RingRing size 6 1/4, ring top is 19mm x 13mm. Set with two 5.3mm opals and approx. 0.20ctw in diamonds. Marked: 18k plat. Weight - 5.8 grams.Gemstones have not been graded for color and clarity ,and testeSee Sold Price
SoldA Platinum, Opal and Diamond Ring, 5.85 dwts.A Platinum, Opal and Diamond Ring, consisting of one oval cabochon cut opal measuring approximately 12.80 x 10.45 x 4.00 mm and 15 round brilliant cut diamonds weighing approximately 1.50 carats totalSee Sold Price
SoldPlatinum Opal Diamond Estate RingPlatinum Opal Diamond Estate Ring Stock # 38216 Beautiful opal diamond estate ring fashioned in platinum. The 5.2 carat fiery opal is surrounded by 14 round brilliant cut diamonds weighing approximateSee Sold Price
Sold1970's Platinum Black Opal & Diamond Ring1970's Platinum Black Opal & Diamond Ring. The ring is centrally set with a large oval cabochon cut black peacock opal. It exhibits a fine blue to green harlequin play of color. It weighs approx. 5.99See Sold Price
SoldEdwardian platinum opal and diamond ring, unmarked. Ring size 6.Edwardian platinum opal and diamond ring, unmarked. 1 cttw. total 3.134 DWT The purchase of gold and platinum requires confirmed funds. Provenance: From the collection of Sue Rudman, owner of AntiqueSee Sold Price
SoldPlatinum Opal Diamond Rosetta RingPlatinum Weight 11g Opal Approx. 10ct Diamond Approx.1.1ct Rosetta Ring Size 7 Measurements 0.96”x0.78See Sold Price
SoldPlatinum 8.22ct Opal Diamond RingMetal Content: Platinum. Weight of Item: 13.4 grams.Size: Ring size 5.75, top - 21mm x 20mm. Gemstone: Opal, Diamonds. Carat Weight: 8.22ct, 1.55ctw. Stamp: pt900, 8.22, 1.55.See Sold Price
SoldA platinum opal and diamond ring. The opal cabochon,A platinum opal and diamond ring. The opal cabochon, with pave-set diamond shoulders. Approximate diameter of opal 10mms. Estimated total diamond weight 0.20ct. Hallmarks for Birmingham. Ring size N 1See Sold Price
SoldPlatinum, Opal and Diamond RingPlatinum, Opal and Diamond Ring, mounted with a round cabochon-cut opal, with an approximate weight of 1.91 carats, two pear-cut and thirty-two baguette-cut diamonds, with an approximate total weightSee Sold Price
SoldA Platinum Opal and Diamond Ring,A Platinum Opal and Diamond Ring,Set with one cabochon cut opal approx; 15.60mm x 11.4mm x 5mm. Also set with twenty-eight old European cut diamonds, each approx .01-.03pts. Ring size: 7 1/2 Approx. wSee Sold Price
SoldPLATINUM, Australian Opal & Diamond RING 15.26ctw, 12.52 Grams Natural jewelry gemston diamondsMaterial: pt900 platinum (10% palladium & 90% platinum), Size: 6.25, Weight: 12.52 grams, Gemstone: Australian opal 15.00ct 23mm x 17mm diamonds .26ctwSee Sold Price
SoldVictorian Platinum Gold Opal Diamond RingVictorian Platinum Gold Weight 5.1g Opal Approx. 6ct Diamond Approx. 0.67ct Ring Size 6.75 Measurements 0.9”x0.78”See Sold Price
SoldPlatinum, Firey Opal & Diamond RingCustom platinum and diamond split prong setting featuring a polished firey opal, 13mm in diameter, seventeen millgrain set diamonds, appx. 0.68 ctw., size 6 1/2.See Sold Price
SoldPlatinum Opal Diamond Cocktail RingPlatinum cocktail ring, with oval 15.5 x 12.5mm opal, surrounded with approx. 0.20ct win diamonds . Opal is slightly loose in the setting. Ring size - 5.75, ring top - 17mm x 20mm. Marked 900pt. WeighSee Sold Price
SoldPlatinum Black Opal Diamond RingMETAL: Platinum. MEASUREMENTS: Ring size - 7.75, ring top is 15.6mm wide. GEMSTONES: Black opal - 15.6mm x 12mm x 5.1mm (stone has small chips/abrasions). Diamonds approx. 0.50ctw. MARKED: with polishSee Sold Price
SoldA PLATINUM, OPAL, AND DIAMOND RINGA PLATINUM, OPAL, AND DIAMOND RING Centering an opal cabochon measuring approximately 14.80 x 11.30 x 4.30 mm, bezel-set in an art deco filigree mount, with single-cut diamonds, engraved and millegraiSee Sold Price
