An opal and diamond ring. The oval opal cabochon, with

OPAL AND DIAMOND CLUSTER RING The oval opal cabochon, within a brilliant-cut diamond surround, ring size approx. M

OPAL AND DIAMOND CLUSTER RING The oval opal cabochon, in a double tiered, brilliant-cut diamond surround, one diamond deficient, several possible diamond simulants, ring size approx. K (sizing band)

An early 20th century 18ct gold opal and diamond ring. The oval opal cabochon, to the single-cut diamond and circular opal cabochon sides. Weight 3.2gms.

A 9ct gold opal and diamond ring. The oval opal cabochon, with single-cut diamond sides, to the bifurcated shoulders with grooved bar terminals. Hallmarks for Birmingham. Weight 1.9gms.

An opal and diamond cluster ring. The oval opal cabochon, with brilliant-cut diamond scalloped surround and similarly-cut diamond line shoulders. Estimated total diamond weight 0.15ct. Ring size N. We

An 18ct gold opal and diamond cluster ring. The oval opal cabochon, within a single-cut diamond surround, to the tapered band. Estimated total diamond weight 0.35ct. Hallmarks for London, 1978. Ring s

An opal and diamond cluster ring. The oval opal cabochon, with rose-cut diamond surround. Ring size L. Weight 3.7gms.

An early 20th century 18ct gold opal and diamond ring. The graduated oval opal cabochon line, with old-cut diamond line spacers and tapered shoulders. Hallmarks for Birmingham. Ring size Q1/2. Weight

An opal and diamond dress ring. The oval opal cabochon, to the brilliant-cut diamond scalloped sides and plain band. Estimated total diamond weight 0.10ct. Weight 4.3gms.

Gold, Opal, and Diamond Ringthe oval cabochon opal (15.88 x 11.06 x 5.50 mm) prong set and with full cut round diamond melee set to shoulders, stamped 14K. Ring size 5.75 4.1 dwt. Opal displays a whit

An 18ct gold opal and diamond three-stone ring. The oval opal cabochon line, with single-cut diamond double spacers, to the scrolling sides and plain band. Hallmarks for London, 1961. Weight 4.9gms.

Opal, Diamond, Vermeil Ring. Featuring nine oval shaped opal cabochons, accented by round-cut diamonds, set in a shield shaped vermeil mounting. {Size: 6 1/2, Gross Weight: 4.0 dwts}

YELLOW GOLD, OPAL AND DIAMOND RING Containing one oval cabochon opal measuring approximately 12.00 x 8.40 mm and 10 round brilliant cut diamonds weighing approximately 0.15 carat total. Ring size 6. S

Opal, Diamond, 18k White Gold Ring. Centering one oval opal cabochon measuring approximately 18.2 x 11.9 mm, accented by one hundred and twelve full-cut diamonds weighing a total of approximately 1.00

OPAL AND DIAMOND RING Containing one oval cabochon opal measuring approximately 22.50 x 15.55 mm and eight round brilliant cut diamonds weighing approximately 0.50 carat total. Mounted in yellow gold.

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

Lady's 14K White Gold Opal and Diamond Ring, semi-crystal Oval cabochon Opal measures approx. 12x10mm and displays predominantly pinkish-orange, green and yellow, full cut diamonds total approx. 1 ct.

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

Opal, Diamond, 14k Yellow Gold Ring. Featuring one oval opal cabochon measuring approximately 10 x 8.5 mm, flanked by six full-cut diamonds weighing a total of approximately 0.10 cttw., set in a 14k y

OPAL AND DIAMOND RING Containing one oval cabochon opal measuring approximately 13.90 x 10.80 mm and numerous baguette and single cut diamonds weighing approximately 1.10 carats total. Mounted in silv

An Edwardian 18ct gold opal and diamond seven-stone ring. The graduated oval opal cabochon line, with single-cut diamond line spacers. Estimated total diamond weight 0.20ct. Hallmarks for Birmingham,

An early 20th century 18ct gold opal and diamond three-stone ring. The graduated oval opal cabochon line, with old-cut diamond double spacers. Estimated total diamond weight 0.10ct. Ring size L1/2. We

(K39E8) One 925 Silver Ethiopian Opal and Diamond Ring with Gold Overlay 1 Oval Opal Cabochon Measurement: 15.00 x 10.mm Carat Weight: 5.34 cts Clarity: Translucent Phenomenon: Play of Color Treatment

10k Yellow Gold Fire Opal and Diamond Ring. Oval cabochon cut opal with 4 round stone diamonds to the face. Unmarked, but tested for 10k gold. Weight Approx., 2 grams Measures Approx., Size 7.25 / Op