A black opal and diamond ring, opal 9.8mm x 7.2mm,

BLACK OPAL AND DIAMOND RING Containing one opal measuring approximately 15.60 x 10.85 x 5.45 mm, six marquise and 14 round brilliant cut diamonds weighing approximately 2.20 carats total. Mounted in b

METAL: 18k Gold. GEMSTONES: Diamonds approx. 0.28ctw, Black opal. MEASUREMENTS: Ring size 6.5, top is 28mm x 29mm. MARKED: Tayma, 750. WEIGHT: 13.8 grams.Gemstones have not been graded for color and c

METAL: 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 polish

RAYMOND YARD, BLACK OPAL AND DIAMOND RING Containing one freeform black opal measuring approximately 15.50 x 11.30 mm, two marquise and six round brilliant cut diamonds weighing approximately 0.55 car

ANTIQUE BLACK OPAL AND DIAMOND RING, EARLY 20TH CENTURY mounted in yellow gold, claw-set with an oval black opal measuring 14.8 x 10.5mm,and weighing approximately 3.36 caarts, within a border of circ

BLACK 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.

14K Gold Black Opal and Diamond Ring 14K gold setting. Black Opal: 17.45 x 9.38 x 4.50 mm. Four round diamonds have an approximate total weight of 1/2 carat. F-VS. Weight: 4.5 grams. Ring Size: 7 1/2

Black Opal, Diamond, Platinum Ring, Ayres The ring features a pear-shaped black opal caboc

18ct gold hallmarked black opal & diamond cluster ring: Outstanding ring supplied by Boodles, ring size T, 24 small but high grade diamonds. Opal measures 16mm x 11mm.

BLACK 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 yel

BLACK 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. Ring

18KYG 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 tested

14 kt White Gold, Black Opal and Diamond Ring. One 14 kt white gold ring containing 1 oval black opal cabochon and 32 round single cut diamonds. The opal measures 9.05 mm L x 7.41 mm W x 3.54 mm D, an

Ring size 8, top measures 26mm x 17.3mm wide. Hand engraving inside shank not legible. Weighs 13.0 grams. Gemstones have not been graded for color and clarity ,and tested for clarity and color enhance

METAL: Platinum. GEMSTONES: Diamonds, Black opal - 25mm x 16.8mm. (opal has fine line scratches). MEASUREMENTS: Ring size 7. MARKED: LRW, PLAT. WEIGHT: 9.9 grams. Gemstones have not been graded for co

METAL: 14k Gold. GEMSTONES: Diamonds 0.08ctw. Black opal - 13.2mm x 10.4mm. MEASUREMENTS: Ring size 6 1/2, ring top is 13mm wide. MARKED: 14k, Maker's mark. WEIGHT: 3.9 grams.Gemstones have not be

Black Opal, Diamond, Platinum, Gold Ring The ring features an oval-shaped black opal caboc

An 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.

An 18k yellow gold, diamond and black opal ring, 48 total diamonds, black opal 12.7mm x 9.525mm with 4 prong setting; 15 grams total weight. Overall good condition. Ring size 8.

A un-treated black opal, diamond and eighteen karat bi-color gold ringdesigned as an oval cabochon black opal, measuring 14.49 x 12.65 x 6.51 mm, within pierced and millegrained round brilliant-cut di

10 ct. Lightning Ridge opal and diamond dinner ring set in 14K white gold mounting. Oval black opal measuring 13 mm x 10 mm x approx. 3.7 mm and containing 12 round brilliant diamonds with a total wei

Art 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 color

METAL: 14k gold. MEASUREMENTS: ring size - 5 3/4, ring top is 24mm x 17mm. GEMSTONES: opal doublet, over black onyx, diamonds - approx. 0.46ctw. MARKED: 14k. WEIGHT: 8.4 grams.Gemstones have not been

Black opal surrounded by baguette and brilliant cut diamonds in a floral motif. Opal 6.24 carats, diamonds 1.79 ctw. Ring measures 7/8 x 1 x 1 1/4 T. Weight 14g. Excellent condition.