A VINTAGE SYNTHETIC OPAL AND DIAMOND RING in yellow gold, set with three cabochon synthetic opals

A VINTAGE OPAL AND DIAMOND RING in yellow gold, set with three cabochon opals punctuated by pairs of single cut diamonds, no assay marks, size M / 6, 2.9g.

A VINTAGE OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by trios of round cut diamonds, stamped 18ct, size S.5 / 9.25, 4.1g.

A vintage 14K yellow gold ring. The crown is set with a row of three diamonds and two white opal cabochons. Unmarked. Total Weight: 2.2 grams. Elegant Mineral Stone Jewelry For Women. Dimensions: Ring

American, mid - late 20th century. Three rings to include: stamped 18K ring with center oval cabochon opal, accented with four small round rubies (possibly synthetic), small gold heart on each shoulde

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 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 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.&

A VINTAGE OPAL AND DIAMOND RING in 18ct yellow gold, set with a cabochon opal between two old cut diamonds, stamped 18ct, size L / 5.5, 3.6g.

AN ANTIQUE VICTORIAN OPAL AND DIAMOND RING, 1897 in 18ct yellow gold, set with three graduated cabochon opals punctuated by pairs of old cut diamonds, full British hallmarks for Birmingham 1897, size

AN ANTIQUE VICTORIAN OPAL AND DIAMOND RING, 1897 in 18ct yellow gold, set with three graduated cabochon opals punctuated by pairs of old cut diamonds, full British hallmarks for Birmingham 1897, size

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 RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with three cabochon opals, accented by round cut diamonds, stamped 18CT & PT, size L / 5.75, 2.7g.

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 OPAL AND DIAMOND THREE STONE RING in 18ct yellow gold, set with an opal cabochon between two old cut diamonds, stamped 18, size G / 3, 2.3g.

A 14kt Yellow Gold, Opal and Diamond Ring, Set with one cabochon cut opal, approx. 12 mm- 9 mm. Also set with three round cut diamond melee, each approx. 0.02-0.03 pts. Marked 14K, BR. Size: 7 Approx.

An Opal Ring. 18 karat yellow gold and platinum mounting contains one oval cabochon opal with three prong set diamonds on either side. Opal is approximately 5.40 carats Size: 6.5 Wt: 7.0 grams

Three 10 Karat Yellow Gold Rings. Comprising a mosaic opal and diamond ring, a smoky quartz ring, and a synthetic ruby ring Wt of all: 19 grams

A Group of Four Vintage 14K Yellow Gold Gemstone Rings Width of Rings Tigers Eye- 0.75in; Synthetic Ruby – 0.875in; Opal Ring -0.50in; Opal Heart Ring – 0.75in Hallmark: three marked 14k,

ANTIQUE / VINTAGE / CONTEMPORARY 14K GOLD AND STONE / GLASS LADY'S RINGS, LOT OF EIGHT, comprising a white gold ring with an opal-type cabochon and three single-cut diamonds, and seven yellow gold rin

A GROUP OF 10K GOLD AND GEM-SET RINGS • 10k yellow gold • 1 moonstone bead, 8 marquise and 4 round garnets, 1 oval synthetic ruby, 1 oval amethyst, 1 round opal cabochon • Sizes 5, 5

AN OPAL AND DIAMOND RING in 18ct yellow gold, set with a cabochon opal in a border of single cut diamonds, stamped 18ct, size M / 6, 2.5g.

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 two cabochon cut opals, accented by old mine cut diamonds, to stylised shoulders, stamped 18CT, size O / 7.25, 2.6g.