A BOULDER OPAL AND DIAMOND CLUSTER RING in white gold, set with an oval cabochon cut boulder opal in

14K white gold ring, brightly polished, featuring centered prong set boulder opal cabochon, weighing approx. 2.65 carats, further adorned with 6 prong set round brilliant cut diamonds weighing a total

OPAL AND DIAMOND CLUSTER RING, in 18 ct. gold. Set with an oval cabochon cut opal with nice color play, surrounded with diamonds. Size N. 3.1 grams.

14kt white and rose gold opal and diamond ring featuring a prong set oval cabochon cut opal weighing approx. 0.92ct. Surrounded by a halo of prong set round brilliant cut diamonds weighing approx. 0.2

AN OPAL AND DIAMOND CLUSTER RING in 18ct white gold, set with a cabochon opal in a cluster of round cut diamonds, British hallmarks, size H / 4, 5.2g.

AN OPAL AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cabochon opal in a cluster of rose cut diamonds, French import mark, size O / 7, 3.9g.

AN OPAL AND DIAMOND CLUSTER RING in 18ct white gold, set with a cabochon opal of 9.50 carats in a border of round brilliant cut diamonds, the band accented by further diamonds all totalling 0.65 carat

AN OPAL AND DIAMOND CLUSTER DRESS RING in yellow gold and silver, set with an oval cabochon opal within a border of old cut diamonds, no assay marks, size N / 6.5, 4.6g.

Set of 18k yellow gold diamond and opal earrings and ring including:18k yellow gold opal and diamond ring; with nine white-crystal oval cabochon cut opals and 20 round brilliant diamonds. One large ov

AN OPAL AND DIAMOND DRESS RING in 18ct yellow and white gold, set with an oval cabochon opal accented by round brilliant and princess cut diamonds, the diamonds all totalling 1.2-1.4 carats, British h

The ring center 4-prong set with one oval cabochon cut White Opal, approximately 6.50 carats, surrounded by 14 tapered baguette cut Diamonds [H/VS], approximate total weight 1.72 carats, and ten full

cluster brooch set with one oval cabochon cut White Opal, approximately 3.59 carats, enhanced with two pear shape cabochon cut White Opals, approximate total weight 1.09 carats, accented with 13 full

In a textured cut-out design set with a treated oval opal cabochon, L. 14mm, with a bar of three single cut diamonds on one side. Testing as 14k. Ring size approx. 5, 8.8g.

An 18ct gold opal and diamond novelty brooch, and an 18ct gold gem-set cluster ring. The brooch designed as a pair of sunglasses with oval opal cabochon lenses and brilliant-cut diamond bridge, the ri

BOULDER OPAL AND DIAMOND CLUSTER RING The oval boulder opal within a radiating surround set with brilliant-cut diamonds, ring size approx. N

OPAL, DIAMOND AND 14K WHITE GOLD RING, with 52 round-cut diamonds set around an oval white opal cabochon weighing approximately 5.22cts. Total estimated weight for all diamonds: 1.41CTS. Ring size: 6-

Designed as a central oval cabochon opal (12.3 x 7.7 mm) in a border of rose cut diamonds set in 14k gold; size 3-1/2, 3.7g

circa 1970s, set to the front with one oval cabochon opal weighing approximately 5.60 carats and accented with prong set round brilliant cut diamonds weighing approximately .69 total carat (H-J color,

Opal, Diamond, White Gold Ring. Centering one oval shaped opal cabochon measuring approximately 11 x 8.3 mm, surrounded by fourteen full-cut diamonds weighing a total of approximately 1.00 cttw., set

Opal, Diamond, 14k White Gold Ring. Centering one oval opal cabochon measuring approximately 15 x 11.9 mm, surrounded by thirty full-cut diamonds weighing a total of approximately 0.50 cttw., set in a

Two 18ct gold diamond and gem-set rings. To include an oval opal cabochon single-stone ring with brilliant-cut diamond stepped sides, together with a ruby and diamond cluster ring. Estimated total dia

A group of Early 20th Century opal and fourteen karat gold jewelryincluding a pair of floriform oval jelly opal cluster stud earrings; two rings set with oval opal cabochons or old mine-cut diamonds.

NO RESERVE, OPAL AND DIAMOND RING, in 18 ct. gold. Set with 3 oval cabochon cut opals, flanked with diamonds. size N 1/2. 3.1 grams.

OPAL AND DIAMOND DRESS RING, in 18 ct. gold. Set with 3 oval cabochon cut opals, accentuated with 4 diamonds. The side of the head and shoulders with relief scrolling design. Size N. 7.8 grams.

-NO RESERVE- OPAL AND DIAMOND DRESS RING, in 18 ct. gold. Set with 3 oval cabochon cut opals, accentuated with 4 diamonds. Size M 1/2. 4.4 grams.