AN UNHEATED COLOUR CHANGE SAPPHIRE AND DIAMOND RING in 14ct rose gold, set with an oval mixed cut

AN AMETHYST AND DIAMOND RING in 14ct yellow gold, set with an oval mixed cut amethyst of approximately 50.90 carats, to diamond set shoulders, stamped 585, size P / 7.75, 18.0g.

Color change sapphire, diamond, platinum, and gold ring Set with an oval-cut color change sapphire weighing approx. 3.26 cts, enhanced by three rows of round brilliant-cut diamonds shoulders Platinum

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 COLOUR CHANGE SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with a central cushion cut sapphire of 5.13 carats, encircled by a border of single cut diamonds, later British import marks,

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

18 kt. White Gold, Aquamarine, Sapphire and Diamond Ring, center prong-set oval mixed-cut aquamarine, wt. approx. 1.29 cts.; inner bezel mounted with 17 tapered cut sapphires, total wt. approx. 1.17 c

14 kt. White Gold, Sapphire and Diamond Ring, center prong-set oval mixed-cut natural blue sapphire, wt. approx. 1.55 cts.; bezel with 26 prong set round brilliant cut diamonds, total wt. approx. 0.60

View a video of this lot: Click HereCrafted in 18K white and yellow gold; set with a cushion modified mixed cut natural Ceylon unheated sapphire, weighing approximately 7.15 carats; s

18 kt. White Gold, Unheated Ceylon Sapphire and Diamond Ring, center prong set cushion mixed cut unheated Ceylon blue sapphire, wt. approx. 11.31 cts., approx. 13.73 x 10.75 x 7.41 mm; shoulders with

View a video of this lot: Click HereCrafted in platinum and 18K gold; set with a 4.00 carat oval mixed-cut Mozambique unheated ruby; flanked by triangular-shaped diamonds, weighing a

18 Karat rose gold sapphire and diamond flower ring. The ring features 1 four prong set, oval cut pink sapphire weighing approx. .51 carats. Accenting the pink sapphire is a halo of 16 pave set, round

A gold five stone sapphire and diamond ring, A gold five stone sapphire and diamond ring, old European cut and Swiss cut diamonds, with two oval mixed cut sapphires between, claw and grain set, to scr

18 kt. White Gold, Green Sapphire and Diamond Ring, 2 central prong set oval shape and square shape mixed cut sapphires, total wt. approx. 3.73 cts.; bezels and shoulders set with 48 prong set round b

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. 

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.

An 18ct gold sapphire and diamond cluster ring, An 18ct gold sapphire and diamond cluster ring, an oval mixed cut sapphire, approximately 5.40mm x 8.00mm, claw set to the centre of a surround of round

SILVER-TOPPED GOLD, SAPPHIRE AND DIAMOND RING Oval mixed cut sapphire measuring approximately 13.60 x 8.80 x 5.10 mm and rose cut diamonds. Silver-topped yellow gold. Ring size 7 1/4. Gross weight: 4.

Yellow sapphire, diamond, and rose gold ring, centering a 1.27cts oval cut yellow sapphire of I clarity, set in a halo of 14 round brilliant cut diamonds, of G to H color and VS clarity, totaling .25c

Crafted in 14K white gold; set with a 10.85-carat oval-shaped unheated sapphire; surrounded by round brilliant-cut diamonds, weighing a total of 2.34 carats (diamond weight is engraved), most with H-I

18 kt. White Gold, Pink Sapphire and Diamond Ring, center oval mixed cut purplish pink Kashmir sapphire, wt. approx. 0.72 ct.; halo and band set with 32 round brilliant cut diamonds, total wt. approx.

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

Having an oval mixed cut blue sapphire in a gallery of marquee cut diamonds set in 14k white gold; size 6.25, 6.9g Provenance: Items descended through the family of a South Salem, NY lady

centering one oval mixed cut natural sapphire weighing approximately 6.11 carats; two oval rose cut diamonds [I/VS] weighing 0.16 and 0.21 carats each; and 38 full cut diamonds [I/VS] weighing approxi

An 18ct yellow gold and sapphire ring set with a mixed oval-cut sapphire in a crossover-style mount, with diamond accents to shoulders, size P, 4.42 grams, together with a yellow metal and hematite pe