HARLEQUIN BLACK OPAL AND DIAMOND PLATINUM RING; Blue-green color plays across cushion shaped Australian opal cabochon on MATRIX, 15.2 x 12.6 mm., 5.1 cts. by formula, flanked by RBC diamonds, approx. .24 ct. TW. Marked 900 platinum, scratch #X8450. Size 6 1/4. 5.1 dwt.
Auctioneer:
Rago Auctions
Date:
2014-12-07
Edwardian Black Opal and Diamond Necklet, the delicate trace link chain suspending a pendant with two bezel-set harlequin black opals and thirty-one bead and bezel-set Read more…
Auctioneer:
Skinner
Date:
2003-06-17
Antique Black Opal and Diamond Ring, Tiffany & Co., centering an opal measuring 12.20 x 10.45 x 3.00 mm, flanked by old European-cut diamond melee, Read more…
Auctioneer:
Skinner
Date:
2008-09-16
BLACK OPAL AND DIAMOND PENDANT; Circular 14k yg. pendant supports a semi-crystal black opal disk with blue fire, 9.50 cts. by formula, and nine brilliant Read more…
Auctioneer:
Rago Auctions
Date:
2013-12-08
Platinum, Black Opal, and Diamond Ring, centering a black opal measuring approx. 11.55 x 9.55 x 2.12 mm, with old-mine cut diamond accents, size 5 Read more…
Auctioneer:
Skinner
Date:
2018-05-15
Platinum, Black Opal, and Diamond Ring, the chevron shaped ring, set with a triangular shaped cabochon black opal measuring approx. 8.90 x 8.40 x 4.20 Read more…
Auctioneer:
Skinner
Date:
2011-03-15
Platinum, Black Opal and Diamond Ring centering a cushion-shaped black opal measuring approx. 9.52 x 9.60 x 3.70 mm., surrounded by old European, old mine Read more…
Auctioneer:
Skinner
Date:
2011-03-15
Art Deco Platinum, Black Opal, and Diamond Ring, set with an oval cabochon black opal measuring approx. 13.20 x 10.70 x 3.40 mm, framed by Read more…
Auctioneer:
Skinner
Date:
2011-03-15
18kt Gold, Black Opal and Diamond Ring, prong-set with a black opal measuring approx. 13.40 x 8.50 x 4.32 mm framed by full-cut diamond melee, Read more…
Auctioneer:
Skinner
Date:
2004-03-16
WALTON & CO. BLACK OPAL AND DIAMOND RING, ca. 1900; Oval black opal, 11.5 x. 7.5 mm, two OMC diamonds and two green garnet accents Read more…
Auctioneer:
Rago Auctions
Date:
2012-12-09
Black Opal and Diamond Ring, Gubelin, prong-set with a cabochon black opal weighing 5.91 cts., framed by marquise- and full-cut diamonds, total diamond wt. 1.90 Read more…
Auctioneer:
Skinner
Date:
2014-09-09
