Harry Winston Platinum and Sapphire Ring, set with a round cabochon sapphire weighing 16.53 cts.,

Art Deco Sapphire and platinum ring Set with a sugarloaf cabochon sapphire weighing approx. 5.50 cts by measurement; 1930s Platinum Ring size 5.75; Gross weight 2.5 dwts This work will

The ring features, oval cushion mixed cut natural sapphire weighing approximately 3.88ct. with 320 round brilliant cut natural diamonds weighing approximately 5.75ct mounted in a platinum and 18k sett

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

Crafted out of platinum and 18K yellow gold, featuring a beautiful and lively round-cut Madagascar sapphire, weighing 6.34 carats, flanked by two triangular-cut diamonds, weighing a total of approxima

Platinum, Star Sapphire, and Diamond Ringthe round cabochon star sapphire (13.62 x 12.16 x 7.20 mm) weighing approximately 12.83 carats prong set within a halo set with full cut round diamonds weighin

Platinum ring featuring a round cut sapphire, weighing approx. 1.80 cts, prong set in center and surrounded by a round cut diamonds set in halo, along shoulders, and in gallery, sz. 5, 6.0 grams

The ring is set with a fine cabochon sapphire in the center weighing 1.50 cts accompanied by 2 round ball cut diamonds weighing .30cts ring weighs 9.2 gr

Platinum sapphire and diamond ring having 1.75 ct. center sapphire with GIA certification report #6213249294; set with 52 baguette and round brilliant cut diamonds weighing approx. 0.54 cts., clarity

View a video of this lot: Click HereCrafted in 18K yellow gold and platinum; set with an oval cabochon sapphire, weighing approximately 5.46 carats; accented by marquise and round fac

Circa 1930's platinum ring, center bezel set round cabochon cut sapphire, approx. 4.10 ct., SI in Clarity (Type III), B in Hue, 8-9 in Tone, and 3 in Saturation. 4 square French cut diamonds , approx

White Gold, Sapphire, and Diamond Ringring with a center raised element set with a round cabochon sapphire weighing approximately 2.17 carats and set to each side with round cut sapphire accents weigh

centering one round cabochon cut star sapphire weighing approximately 5.8 carats; and 35 early round full cut, single cut, and Swiss cut diamonds [G-H/VS2-SI1] weighing approximately 0.90 carats total

Harry Winston Platinum and Diamond Ring One cushion-shaped diamond weighing 1.01 cts., small round diamonds ap. .60 ct., with makers mark, no. 217700, one small diamond missing, ap. 2 dwts. Size 2 1/2

Ladies platinum sapphire and diamond ring featuring a prong set rectangular step cut sapphire weighing approx. 1.42ct.. Surrounded by a floral frame of prong set round brilliant cut diamonds weighing

Platinum, Sapphire and Diamond Ring. Prong-set with a cushion-shaped sapphire weighing 4.07 carats, flanked by round diamonds, size 7. Accompanied by GIA report no. 2203365353

METAL: platinum GEMSTONE(S): round cabochon star sapphire weighing 6.00 carats; round brilliant cut diamonds weighing 1.00 carats total (carat weight stamped) MEASUREMENTS: ring top 3/4 x 3/4 inch RIN

Platinum, Gold, Yellow Sapphire, and Diamond Ring, Francebezel set with one round cut yellow sapphire (9.63 x 8.6 x 6.2mm) weighing approximately 3.98 carats and with a conforming surround of (18) bea

Vintage Platinum, Sapphire, and Diamond Ringcentering on a round cut sapphire (6mm) weighing approximately 1.1 carats set between two transitional cut diamonds weighing approximately 1.6 total carats

with one round cabochon cut moonstone framed with a row of sapphire melee the moonstone weighing approx. 4.70 carats; the sapphires, .70 total carats 6.0 grams size 7

Pair of Citrine, Sapphire, 14k Gold Earrings. Each featuring one oval-cut citrine weighing approximately 2.55 cts., accented by two round shaped sapphire cabochons, set in a 14k yellow and white gold

TIFFANY & CO.: A PLATINUM, STAR SAPPHIRE AND DIAMOND RING Centering an oval star sapphire cabochon weighing approximately 16.30 carats, accented by round and trapezoid-shaped diamonds weighing approxi

Platinum, Diamond, and Sapphire Ringca. 1920s; centering an old European-cut diamond weighing approx. 2.10 cts. surmounted by channel-set sapphires and single-cut diamonds in a platinum filigree mount

Sapphire, Diamond, Platinum Ring. Centering one round-cut sapphire weighing approximately 0.50 ct., surrounded by sixteen single-cut diamonds weighing a total of approximately 0.25 cttw., set in a pla

14K white gold ring designed by Peter Danforth, bezel set with a round pale star sapphire cabochon, apprx 5.03 cts, the top shank pave set with round cut diamonds, apprx .15 cts. tdw., 5.8 grams. Ring