A FINE ANTIQUE BLACK OPAL AND DIAMOND RING in yellow gold, set with an oval cabochon opal of appr...

AN ANTIQUE OPAL AND DIAMOND RING in 18ct yellow gold, set with three graduated oval opal cabochons, punctuated by pairs of old mine cut diamonds, British hallmarks for Birmingham, 1890, size S / 9, 5.

AN ANTIQUE OPAL AND DIAMOND DRESS RING in 18ct yellow gold, set with a trio of graduated oval cabochon opals, accented by pairs of old European brilliant cut diamonds, full British hallmarks (partly o

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

AN ANTIQUE OPAL AND DIAMOND DRESS RING in high carat yellow gold, the face set with five graduated oval cabochon opal accented by single cut diamonds, with textured decoration to the band, unmarked, s

An Opal and Diamond Ring. 14 karat yellow gold ring contains one prong set oval cabochon opal which is aurrounded by ten prong set round diamonds, which are surrounded by a single band of black enamel

Antique opal and diamond ring, set in 14kt yellow gold, approx. 1.0 ct oval opal cabochon (frosted), .35 ct. tw. Old European cut diamond sides, sz. 6 3/4, 3.1 grams. New bidders to Smiths - payment f

Yellow gold ring set with 13 .02 ct round cut diamond around an oval cabochon fire opal. Ring size 6.5

Centering an oval-cut opal cabochon measuring approximately 12.0 x 10.0 mm, accented by twenty-six full-cut and eighteen baguette-cut diamonds weighing a total of approximately 0.57 cttw., set in a 14

AN ANTIQUE OPAL AND DIAMOND RING in yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, partial British hallmarks, size R1/2 / 9, 3.8g.

AN OPAL AND DIAMOND RING in yellow gold, set with an oval cabochon opal doublet within a border of single cut diamonds, no assay marks, size Q / 8, 5.3g.

AN ANTIQUE OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, stamped 18ct, size N / 6.75, 4.2g. 

AN ANTIQUE OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, inscribed JJ - H.B MCK 28/12/20, partial British hallmarks, size M / 6.25,

AN OPAL AND DIAMOND RING in 9ct yellow gold, set with an oval cabochon opal and old cut diamond of approximately 0.27 carats, full British hallmarks for 9ct gold Birmingham 1988, size N / 7, 5.8g.

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 ANTIQUE OPAL AND DIAMOND RING in 18ct yellow gold, set with two cabochon cut opals, accented by old mine cut diamonds, to stylised shoulders, stamped 18CT, size O / 7.25, 2.6g.

AN ANTIQUE EDWARDIAN OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, full British hallmarks for Chester 1904, size R1/2 / 8.75, 4.0g.&

NO RESERVE - AN ANTIQUE OPAL AND DIAMOND DRESS RING, Made in yellow gold, Three graduated oval cabochon opals, Old European brilliant cut diamonds (one replaced with a round brilliant cut diamond), No

An Opal & Diamond Ring. 14 karat yellow gold mounting contains one prong set oval cabochon opal surrounded by 16 round diamond mounted in white gold. Opal sustains an interior crack Size: 7 Wt: 7.7 gr

AN OPAL AND DIAMOND THREE STONE RING in 18ct yellow gold, set with an oval cabochon opal between two round brilliant cut diamonds, stamped 750, size K1/2 / 5.5, 4.7g.

AN ANTIQUE OPAL AND DIAMOND RING, 19TH CENTURY in 18ct yellow gold, set with two cabochon opals and old cut diamonds, British hallmarks for Chester, 1898, size O / 7, 2.8g.

NO RESERVE - AN ANTIQUE OPAL FIVE STONE RING in 18ct yellow gold, set with five graduated oval cabochon opals, stamped 18ct, size P / 7.75, 4.8g.

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

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.

AN ANTIQUE OPAL AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a cabochon opal in a cluster of rose cut diamonds, stamped 18CT & PLATINUM, size M / 6.25, 2.7g.