18ct Gold and Platinum Sapphire Cocktail Ring,

Two mid 20th century 18ct gold and platinum, diamond and sapphire rings. The first designed as a circular-shape sapphire with single-cut diamond surround, the second designed as a circular-cut diamond

A mid 20th century sapphire and diamond cluster ring. The rectangular-shape sapphire, within an old-cut diamond surround, to the grooved shoulders and plain band. Estimated total diamond weight 0.35ct

A platinum and 18ct gold sapphire and diamond cluster ring. The oval-shape greenish blue sapphire, with single-cut diamond surround and tapered sides. Estimated total diamond weight 0.20ct. Hallmarks

Ring size 7 1/2, ring top is 8.2mm x 23mm. Color changing sapphire - 6.7mm in diameter, surrounded with 6 old mine cut diamonds (approx. 0.72ctw) Marked: 18ct, platinum. Weight - 5.5 grams.Gemstones h

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold and platinum, the circular face set with pattern of step cut sapphires and round cut diamonds, further diamonds accenting the band, stamped 18ct PLAT, s

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold and platinum, the circular face set with step cut sapphires and round cut diamonds, further diamonds accenting the band, stamped 18ct PLAT, size N / 7,

CEYLON NO HEAT SAPPHIRE AND DIAMOND RING, BULGARI in platinum and 18ct gold, claw set with an emerald cut sapphire of 6.54 carats, accented by pairs of baguette cut diamonds, signed Bvlgari, size N /

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

18ct yellow gold sapphire & diamond ring set in platinum. Size O, weight 3.0g.

Vintage David Webb 14k gold and platinum dome cocktail ring, with carved emeralds, sapphires and rubies, as well as approx. 1.60ctw in diamonds. Ring size - 9, ring top - 24mm x 30mm, sits approx. 16m

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in platinum and 18ct white gold, set with a cushion cut blue sapphire of 4.17 carats, within a border of round cut diamonds, the diamonds all totalling 2.2-2

A SAPPHIRE AND DIAMOND THREE STONE RING in 18ct yellow gold and platinum, set with a square step cut blue sapphire between two round cut diamonds, stamped Plat 18ct, size N / 6.5, 2.1g.

A SAPPHIRE AND DIAMOND CLUSTER DRESS RING in 18ct yellow gold and platinum, set with a round cabochon blue sapphire of 0.97 carats within a border of old cut diamonds, stamped 18ct Plat, size L1/2 / 6

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 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

18K Yellow Gold Sapphire & Diamond Cocktail RingWeighing 19.1 gramsSet with an app. 5.00 Ct. Sapphire in CenterAlong with 88 Diamonds weighing app. 3.00 Ct.F-G Color, VVS-VS ClarityRing Size 7

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold and platinum, set with a cushion cut blue sapphire of 0.93 carats, within a border of old cut diamonds, stamped Pt 18ct, size M / 6, 3.1

A SAPPHIRE AND DIAMOND DRESS RING, CIRCA 1940 in 18ct yellow gold and platinum, set with a step cut blue sapphire within a border of round cut diamonds, stamped 18ct Pt, size K / 5.25, 3.9g.

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

Two early 20th century platinum and 18ct gold diamond and gem-set rings. To include a diamond three-stone crossover ring, together with an alternating sapphire and old-cut diamond five-stone ring. Est

An 18ct gold ring set with central sapphire bordered by diamonds in a platinum setting. Ring size approx. O 1/2

An 18ct gold ring set with central sapphire flanked by diamonds in a platinum setting. Ring size approx. L

This beautiful vintage ring is crafted from 14k white gold featuring a high gallery oval shape bridge with round scallop edge and milgrain decor frame. The center has a gorgeous Star Sapphire held sec

47.33 Carat Aquamarine Diamond Yellow Gold Platinum Cocktail Ring