Very Fine Approx. 12.42 Carat Oval Cabochon Black Opal,

1970'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. 5.99

13.26 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.

14KT YELLOW GOLD, OPAL, EMERALD AND DIAMOND PENDANT WITH CHAIN Approx. 8.79 total dwt. (No Reserve*) An approx. 24.4 carat oval cabochon opal, 34.0 x 16.0 x 7.2mm, surrounded by 12 pear-shaped emerald

14KYG Black Opal Ring size 8, oval cabochon black opal doublet approx. 17.5mm x 11.0mm, engraved leaf and vine design ring stamped and tested 14K, gross weight approx. 6.45dwt

14KYG Black Opal Ring size 5, leaf motif stamped and tested 14K ring holding an oval cabochon black opal doublet approx. 13.0mm x 10.0mm, gross weight approx. 3.60dwt

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

NO RESERVE - A BLACK OPAL AND DIAMOND PENDANT NECKLACE, CIRCA 1910, Made in 15 carat yellow gold, platinum and 18 carat yellow gold, the chain later added, Oval cabochon black opal, weighing approxima

Vintage Oval Cabochon Black Opal and 14 Karat Yellow Gold Ring. Opal measures 12mm x 6.5mm. Unsigned. Very good vintage condition. Ring size 6. Approx. weight: 4.4 grams. Shipping $28.00 (estimate $10

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.

ART 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. Mo

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

A 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 sponsor

Oval black opal weighing approx 1 carat measuring 10mm x 7mm and small round diamond set in 14K white gold pendant measuring approx 1 1/8" long with 18" 14K white gold chain, weighs 2.1dwt No Reserve

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

Fourteen-Karat Yellow Gold, Black Opal and Diamond Pendant, in a modern design and bezel-set with an oval cabochon black opal, with an approximate weight of 5.75 carats, and two round brilliant-cut di

NO 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,

18 karat yellow gold ring with one oval cabochon semi-Black Opal with gray background that weighs 15-1/2 carats. 41 round full cut diamonds at 0.84 NEIMAN MARCUS. Appraised Fair Market Value (FMV) is

METAL: 14K white gold GEMSTONE(S): oval cabochon opal approx. 7.04 carats; accented by round brilliant diamonds approx. 1.51 carats total, most G-H/VS-SI MEASUREMENTS: ring top 1-1/8 x 1 inches RING S

Beautiful Silver/Gold Vermeil, Opal and Diamond Necklace, composed of thirty-three oval links, each mounted with an oval cabochon-cut black opal, with an approximate total weight of 18.25 carats, and

METAL: 18K rose gold GEMSTONES: oval cabochon opal; round single cut diamonds approx. 0.60 carat total MEASUREMENTS: ring top 3/4 x 3/8 inch RING SIZE: 6-1/2 WEIGHT: 4.30 g.Stamped: 18K, inspired

METAL: 14K yellow gold GEMSTONE(S): oval cabochon opal; single cut diamonds approx. 0.30 carat total MEASUREMENTS: inner circumference 6 inches WEIGHT: 42.70 g.PROPERTY OF A FLORIDA ESTATE

Vintage Oval Cabochon Opal, Black Onyx and 14 Karat Yellow Gold Ring. Opal with good play of color, measures 7 x 5mm. Stamped 14K. Ring size 6-3/4. Approx. weight: 12.14 grams. Condition: Very good vi

Title: 3.30Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 3.3 Size/Dimensions: 12.50x9.00x5.70 MM Additional Information: HEATED Reserve: $40.00 Shipping: D

Title: 3.35Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 3.35 Size/Dimensions: 12.80x8.50x6.30 MM Additional Information: VVS QUALITY HEATED WITH PLAY OF C