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Antique Square Cushion Cut Diamond Ring

Edwardian sapphire and diamond cluster ring, designed as brilliant-cut diamond and calibré-cut sapphire entwined ribbons centering on a single circular-cut diamond collet, rose-cut diamond three-stone shoulders to the platinum and gold mount.

ALEXIS BITTAR turquoise cushion cut encrusted earrings

A Brandt and Son Vintage 14kt & Emerald Cut Diamond Engage Ring .58ct

Diamond ring, circa 1915. The marquise-shaped diamond weighing 3.71 carats, in a pierced frame of conforming shape decorated with small single-cut diamonds and calibré-cut simulated sapphires, mounted in platinum.

307ct Estate RADIANT Cut Diamond $13550.00

A ruby and diamond necklace designed as five strands of graduated ruby beads accentuated by rose-cut diamond bars suspending a large openwork pendant of rose-cut diamonds which centers a hexagonal carved ruby and further fluted ruby bead fringe; mounted in silver-topped fourteen karat gold; length: 18in. Striking!

ART DECO DIAMOND, PLATINUM RING. Featuring two old European-cut diamonds weighing approximately 1.15 ct., and 1.00 ct., accented by sixteen single-cut diamonds weighing a total of approximately 0.25 ct., bezel and bead set in a platinum mounting

A HIGHLY IMPORTANT SINGLE-STONE DIAMOND RING, BY HARRY WINSTON Set with a marquise-cut diamond, weighing approximately 17.80 carats, flanked on either side by tapered baguette-cut diamonds, mounted in platinum, (inscribed "17.80") Signed Winston for Harry Winston

Stunning Retro Moderne Marquise Diamond Ring. 2.83 ct center marquise cut diamond.