Sold2018Art 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
Sold2023An Art Deco single stone black opal ring,An Art Deco single stone black opal ring, An Art Deco single stone black opal ring, with diamond set shoulders. A circular tallow cabochon cut black opal, milligrain set to each shoulder, to a ridgedSee Sold Price
Sold2022A FINE ART DECO BLACK OPAL AND DIAMOND RING in white gold, set with a pear shaped cabochon opalA FINE ART DECO BLACK OPAL AND DIAMOND RING in white gold, set with a pear shaped cabochon opal accented by round cut diamonds, no assay marks, size I / 4.5, 3.5g.See Sold Price
Sold20161970'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
Sold2022ART DECO, BLACK OPAL AND DIAMOND BROOCHART DECO, BLACK OPAL AND DIAMOND BROOCH Containing one oval cabochon black opal measuring approximately 19.85 x 17.10 x 5.85 mm and 18 old mine cut diamonds weighing approximately 0.80 carat total. MoSee Sold Price
Sold202218KYG Black Opal and Diamond Ring18KYG Black Opal and Diamond Ring size 11, bezel set oval cabochon black opal doublet approx. 13.0mm x 8.5mm, 10 prong set mixed sized round brilliant cut diamonds approx. .30cttw., stamped and testedSee Sold Price
Sold2015Art Deco Opal, Diamond, Platinum Ring The ringArt Deco Opal, Diamond, Platinum Ring The ring features an oval-shaped opal cabochon measuSee Sold Price
Sold2018Lady's 14k Black Opal & Diamond Ring Size 5. Includes aLady's 14k Black Opal & Diamond Ring Size 5. Includes a prong set black opal oval cabochon measuring 9.42x5.7x3.8mm (1.15ct). It is slightly bluish green with a moderate amount of crazing. It is flankSee Sold Price
Sold2017LATE ART DECO OPAL, DIAMOND & PLATINUM RINGAn oval opal cabochon with predominately green color play, approx. 7.0 cts. by formula, baguette and RBC diamond pierced shoulders, diamonds approx. .36 ct. TW. Ca. 1940. Unmarked. Size 7 1/2. 4.1 dwtSee Sold Price
Sold2018Black Opal, Diamond, Platinum, Gold Ring The riBlack Opal, Diamond, Platinum, Gold Ring The ring features an oval-shaped black opal cabocSee Sold Price
Sold2024Art Deco Platinum Cabochon Opal & Diamond Ring sz9An antique Art Deco platinum ring, featuring a delicate band adorned with two diamonds set around a central cabochon opal. The opal showcases a light orange translucent hue and measures approximatelySee Sold Price
Sold2016Art Deco Platinum Black Opal & Diamond PendantArt Deco Platinum Black Opal & Diamond Pendant. It features a drop design centrally set with a massive pear shaped black opal. It exhibits a harlequin peacock play-of-color and measures 31.00mm x 21.0See Sold Price
Sold2022Opal, Diamond and Platinum Ring13.26 Carat Oval Cabochon Black Opal, 2.26 Carat TW Eighteen Round Brilliant Cut Diamond and Platinum Ring. Opal with very good play of multi color. Diamonds E-F color, VVS-VS clarity. Stamped Pt900.See Sold Price
Sold2024PLATINUM 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
Sold2022A PLATINUM, BLACK OPAL AND DIAMOND RINGA PLATINUM, BLACK OPAL AND DIAMOND RING Centering a black opal oval-shaped double cabochon weighing approximately 4.50 carats encircled by round and tapered baguette diamonds weighing approximately 1.See Sold Price
Sold2017BLACK OPAL, DIAMOND & WHITE GOLD RINGAn oval black opal with board blue/green color play, 12.10 x 9.20 mm, set horizontally in RBC diamond pave gallery, hoop, 1.65 cts. TW. 18k. Size 4 1/2. 4.0 dwt.See Sold Price
Sold2023A single stone black opal ring,A single stone black opal ring, A single stone black opal ring, an oval cabochon opal, approximately 9.00mm x 13.00mm, claw set to a plain collet, to trifurcated shoulders, and a plain shank. Tested aSee Sold Price
Sold2020Art Nouveau Potter Mellen 14k Gold Black Opal RingArt Nouveau ring with opal. Features a floral form with oval 13mm x 10mm bezel set cabochon. Marked 14k Potter Mellen. Weighs 10 grams. Measures 20mm wide. Size 6. Good overall condition with minor weSee Sold Price
Sold2015An Opal and Diamond Ring.An Opal and Diamond Ring. 14 karat yellow gold ring contains one prong set oval cabochon opal which is aurrounded by ten prong set round diamonds, which are surrounded by a single band of black enamelSee Sold Price
Sold2022BLACK OPAL AND DIAMOND RINGBLACK OPAL AND DIAMOND RING Containing one oval cabochon black opal measuring approximately 23.00 x 15.00 x 6.45 mm and 34 transitional and single cut diamonds weighing approximately 0.65 carat total.See Sold Price
Sold2021BLACK OPAL AND DIAMOND RINGBLACK OPAL AND DIAMOND RING Containing one oval cabochon black opal measuring approximately 15.00 x 13.00 mm and 40 round brilliant cut diamonds weighing approximately 0.40 carat total. Mounted in yelSee Sold Price
Sold2021BLACK OPAL AND DIAMOND RINGBLACK OPAL AND DIAMOND RING Containing one oval cabochon black opal measuring 10.85 x 9.00 mm and 12 round brilliant cut diamonds weighing approximately 1.20 carats total. Mounted in yellow gold. RingSee Sold Price
Sold2022A BLACK OPAL AND DIAMOND CLUSTER RING, LONDON 1975A BLACK OPAL AND DIAMOND CLUSTER RING LONDON 1975The oval cabochon black opal within a surround of brilliant cut diamonds, approximately 0.48 carats total, the 18 carat gold shank stamped with sponsorSee Sold Price
Sold2021NO RESERVE - AN ANTIQUE BLACK OPAL AND DIAMOND BARNO RESERVE - AN ANTIQUE BLACK OPAL AND DIAMOND BAR BROOCH, CIRCA 1910, Made in yellow gold and platinum, Oval cabochon black opal, weighing approximately 1.61 carats, Single cut and rose cut diamonds,See Sold Price
11 hrs LeftClaydon Auctioneers LtdA platinum ring set with central black opal cabochon flanked by diamonds in an Art deco style£300
3 days LeftMiami Auction GalleryEstate GIA Large Black Opal Diamond Platinum Cocktail Ballerina Ring$42,000
2 days LeftPlatinum Auction GroupArt Deco Platinum Diamond Brooch Gold Enamel Amethyst 14k Yellow$300(1 bid)