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A ruby and diamond ring centered by an emerald-cut ruby weighing 2.76 carats; flanked by emerald-cut diamonds, one diamond weighing .78 carat, the other weighing .76 carat. Z

Spectacular Estate Emerald and Diamond Ring

Spectacular Estate Emerald and Diamond Ring. large scale, adaptation of the classic platinum by-pass ring is designed around a vivacious, bright green, elongated emerald-cut emerald weighing 4.00 carats. The emerald is asymmetrically framed by two large fancy-cut diamonds: an epaulet-cut diamond weighing 2.25 carats and a trapezoid-cut diamond weighing 1.75 carats. The shoulders of the shank is enhanced by round brilliant and baguette-cut diamonds and rectangular-shaped calibre emeralds. Z

2.77 Carat Emerald and Bullet-Cut Diamond Art Deco Ring. Old mine Colombian emerald, weighing 2.77ct, is classically showcased in platinum between a shimmering pair of bullet-cut diamonds, together weighing one-half carat. Circa 1930s. Via Lang Antiques. Z

A ravishing, rich, red ruby weighing 1.75 carats, radiates from the center of this finely crafted platinum and diamond Art Deco ring. Z

4.12 Carat Emerald Cut Art Deco Diamond Engagement Ring *Art Deco 6.12 Carat Square Emerald Cut Diamond Engagement Ring, A 6.12 carat L color VS1 clarity square emerald-cut diamond center stone set in an Art Deco platinum ring with side bullet-shaped diamonds. Circa 1930. Z

THE 'PIGEON HEART RUBY' RING, CARTIER The cushion-shaped cabochon ruby weighing 31.30 carats, claw-set to a mount accented with brilliant-cut diamonds, size 51, signed Cartier, numbered, French assay and maker's marks, case by Cartier.

OSCAR HEYMAN & BROTHERS ruby and diamond ring, circa 1965. Center ruby is 17.92 carats