A VINTAGE SAPPHIRE AND DIAMOND CLUSTER RING in yellow gold, set with a central oval cut sapphire

A VINTAGE SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 0.65 carats, in a border of round brilliant cut diamonds, full British hallmarks for 18ct gold, size K

A VINTAGE SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 0.65 carats, in a border of round brilliant cut diamonds, full British hallmarks for 18ct gold, size K

AN ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING in yellow gold, set with an oval cut sapphire of approximately 1.09 carats in a cluster of rose cut diamonds, no assay marks, size I1/2 / 4.5, 2.4g. 

NO RESERVE - A SAPPHIRE AND DIAMOND CLUSTER RING in yellow gold, set with an oval cut sapphire in a cluster of round brilliant cut diamonds, indistinct full British hallmarks, size J / 4.75, 1.5g.

AN ANTIQUE SAPPHIRE AND DIAMOND RING in yellow gold, set with a central oval cut sapphire and four rose cut diamonds, with further rose cut diamonds to the shank, unmarked, size Q / 8, 2.94g.

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 1.53 carats in a cluster of old cut diamonds, each shoulder set with a further old cut diamond, the diamonds a

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 1.67 carats in a cluster of round brilliant cut diamonds, British hallmarks, size O / 7, 4.6g.

AN ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING in yellow gold and silver, set with an oval cut sapphire of approximately 1.29 carats in a cluster of old cut diamonds, no assay marks, size N1/2 / 7, 2.6g

A SAPPHIRE AND DIAMOND RING, in 18 carat yellow gold, set with a central oval cut sapphire framed by round cut diamonds with further square cut sapphires to the shank, stamped 750, size O / 7, 3.7g.

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with an oval cut sapphire, in a halo of old mine cut diamonds, to stylised shoulders, stamped with maker's mark and 18CT & PLA

AN ANTIQUE BURMA NO HEAT PINK SAPPHIRE AND DIAMOND CLUSTER RING in yellow gold and silver, set with an oval cut pink sapphire of 1.36 carats in a cluster of old cut diamonds, on a bifurcated band, no

A VINTAGE SAPPHIRE AND DIAMOND SNAKE RING in yellow gold, set to the head with an oval cut sapphire accented by single cut diamond set eyes leading to a woven textured body, no assay marks, maker's ma

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with an oval cut blue sapphire of 1.36 carats within a border of round cut diamonds, with further diamonds set to the shoulder

A SAPPHIRE AND DIAMOND THREE STONE CLUSTER RING in 14ct yellow and white gold, set with three oval cut sapphires totalling 1.0-1.2 carats in a cluster of round brilliant cut diamonds, full British hal

AN ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut sapphire within a halo of round cut diamonds, stamped 18ct Plat, size N / 6.5, 2

NO RESERVE - A SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut blue sapphire within a border of single cut diamonds, maker's mark SH&Co, st

An art deco synthetic sapphire and diamond ring set in 18k yellow gold (tested). Central oval faceted cut sapphire weighing 2.83 ct (11.25 x 8.90 x 3.87). Flanked by 12 elongated emerald cut diamonds

marked 9k to band, set with central oval cut sapphire on a multi prong setting encircled by petite rough cut diamonds, on a 9ct gold yellow gold band, total weight 2.66gm, size P

A SAPPHIRE AND DIAMOND CLUSTER RING in high carat yellow gold, set with an oval cabochon sapphire of 8.78 carats encircled by round cut diamonds 1.10-1.40 carats, unmarked, size P / 8, 8.7g.

Ladies' vintage 14 karat Yellow Gold cluster ring, in classic band design. Set with a multitude of marquise cut Sapphires, with the center stone encircled by round brilliant cut accent Diamonds. Marke

AN UNHEATED VIOLET SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with a central oval cut violet sapphire of 2.02 carats, within a navette border set with clusters of marquise and round brill

A VINTAGE TURQUOISE, SAPPHIRE AND DIAMOND RING, BEN ROSENFELD 1972 in 18ct yellow gold, set with an oval turquoise cabochon of 7.35 carats, encircled by a border of round cut diamonds totalling 2.0-2.

18kt White Gold ring set with 2.43ct Oval cut Yellow Sapphire in central position flanked by 1.25cts twt. of Round Brilliant and Baguette cut Diamonds on the band. Marked 750, MKD025. Ring size 6 3/4.

Vintage 14K yellow gold ladies ring set with oval Sapphire bordered by twelve round brilliant cut diamonds. Ring size 9. Approx. overall weight 11.2 grams.