A SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 2.81 carats, in a border of round and

A SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 2.81 carats, in a border of round and baguette cut diamonds, the shoulders accented by further diamonds, no assay marks, size N / 6.5, 4.7g

A SAPPHIRE AND DIAMOND RING in platinum, set with an oval cut sapphire of 5.75 carats, in a border of round brilliant and baguette cut diamonds totalling 1.96 carats, stamped Pt900, size M / 6, 14.0g.

A SAPPHIRE AND DIAMOND RING in 18ct white gold, set with an oval cut sapphire of 3.13 carats in a double border of round brilliant cut diamonds, the diamonds all totalling 1.0-1.1 carats, stamped 18K,

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 DRESS RING in 18ct yellow gold, set with an oval cut sapphire of approximately 1.70 carats in a border of round brilliant, old and single cut diamonds, the stepped shou

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold, the navette face set with an oval cut sapphire of 2.20 carats in a border of round cut diamonds, the diamonds all totalling 0.5-0.7 carats, British hal

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

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.

A VINTAGE SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 0.94 carats between two round cut diamonds, accented by further diamonds to the band, no assay marks, size N / 6.5, 2.8g.

YELLOW SAPPHIRE AND DIAMOND RING set with five oval cut yellow sapphires in a border of round cut diamonds, stamped 375, size M / 6, 2.3g.

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 4.90 carats accented by round brilliant cut diamonds to the band, stamped 750, size M / 6, 6.0g.

SAPPHIRE AND DIAMOND RING set with a mixed-oval cut sapphire of 2.21 carats in a border of six rose cut diamonds, stamped 18ct, size P / 7.5,4.7g. Accompanied by a gemmological certificate stating tha

A YELLOW SAPPHIRE AND DIAMOND RING set with an oval cut yellow sapphire of 2.00 carats, between two round brilliant cut diamonds totalling 0.4-0.5 carats, stamped PLAT, size O / 7, 4.2g.

A sapphire and diamond cluster ring claw-set with an oval-cut sapphire, in a single border of graduated round brilliant-cut diamonds, to a plain unmarked shank (Ring size: K)

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of 1.67 carats, in a cluster of round brilliant cut diamonds, no assay marks, sizing beads, size I / 4, 3.3g.

AN ART DECO CEYLON NO HEAT 8.41 CARAT SAPPHIRE AND DIAMOND RING in platinum, the oval cut sapphire of 8.41 carats is framed in a border of round cut diamonds totalling approximately 0.35 carats, Frenc

A CEYLON NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut blue sapphire of 3.39 carats in a cluster of round brilliant cut diamonds, no assay marks, size M / 6, 4.5g. Accompanied by a ge

A SAPPHIRE AND DIAMOND DRESS RING set with an oval cut sapphire of 0.55 carats in a stylised cross shaped border of french cut sapphires and single cut diamonds, no assay marks, size N / 6.75, 4.2g.

Marked 14K white gold ring set with blue oval cut sapphire accented by eighteen .01 carat each round diamonds. Size 6. 3/8" wide. 1.7 dwt. Missing one diamond. MH/EK. IMPORTANT: Before bidding, please

A YELLOW SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut yellow sapphire of 2.50 carats in a cluster of round brilliant cut diamonds, further diamonds accenting the shoulders all t

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with a round cut sapphire of 2.66 carats, surrounded by a border of round brilliant cut diamonds, stamped PT 950, size N1/2 / 6.75, 5.1g.

A BURMA NO HEAT SAPPHIRE AND DIAMOND RING set with a cushion cut blue sapphire of 4.18 carats, within a graduated border of old cut and round cut diamonds, no assay marks, size N / 6.75, 4.0g. Accompa