A BLACK OPAL AND DIAMOND DRESS RING Cabochon black

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.

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

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

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

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

Crafted in platinum featuring (1) natural cabochon black opal weighing approx 3.30ct. The opal is surrounded by (41) round diamonds weighing approx .41cttw and (16) tapered diamond baguettes weighing

Opal and Diamond Ring.  A .94 carat cabochon black opal is raised above a .78 carat round, brilliant-cut and baguette, G-I color, SI1-SI2 clarity diamond skirt on a platinum ring.  The ring

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

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

Lady'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 flank

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

A black opal, diamond and eighteen karat gold ringdesigned as a pear cabochon black opal, measuring approximately 9.75 x 7.50 x 3.90 mm, framed by round brilliant-cut diamonds. 2.7 dwt; size: 10 1/2

Stunning large exceptional quality black Australian opal and diamond ring. Crafted out of platinum. Features a large natural solid black opal cabochon with an explosion of colors ranging from green, b

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

A black opal, ruby, green garnet and marquise-shape diamond dress ring, with seahorse supports. Interchangeable with pendant mount.Estimated total diamond weight 0.20ct.Approximate ring size S. Length

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

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 ridged

A 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.

A VINTAGE BLACK OPAL DRESS RING in yellow gold, set with a round cabochon opal, full British hallmarks for London 1974, size O / 7.25, 5.5g. 

A 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.

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.

An opal three-stone and diamond ring. The graduated oval black opal cabochon line, with old-cut diamond double spacers and stylised foliate shoulders. Estimated total diamond weight 0.10ct. Ring size

DIAMOND, OPAL AND ENAMEL RING Containing one round brilliant cut diamond, eight round cabochon opals and black enamel detail. Mounted in yellow gold. Ring size 6 3/4. Stamp: 14K. 8.10 dwt. Property fr