18kt Gold Platinum Colored Diamond and Sapphire Ring Van Cleef & Arpels

18kt Gold, Platinum, Colored Diamond, and Diamond "High Halo" Ring, Etienne Perret, set with a cognac diamond weighing 1.28 cts., with full-cut diamond melee, total Read more…

Gentleman's 18kt Gold, Platinum, and Diamond Ring, c. 1930, bead-set with an old European-cut diamond weighing approx. 0.55 cts., 18kt gold shank with geometric platinum Read more…

VINTAGE 18KT GOLD, PLATINUM, AQUAMARINE & DIAMOND PIN, W 2 1/4":Having a center aquamarine, flanked by diamonds set in platinum, and fitted with an 18kt Read more…

18kt Gold, Platinum, and Diamond Bracelet Watch, Van Cleef & Arpels, France, the fluted gold links joined by platinum-topped gold arches set with forty-six full-cut Read more…

18kt Gold, Platinum, and Diamond Pendant/Brooch, the diamonds mounted in platinum on an 18kt gold backing, total 5.7 dwt, lg. 1 3/8, wd. 1 in. Read more…

18kt Gold, Platinum, and Diamond Earrings, Paloma Picasso for Tiffany & Co., each graduated gold hoop bead-set in platinum with full-cut diamonds, approx. total wt. Read more…

18kt Gold, Platinum, and Diamond Spray Brooch, France, set with full-cut diamonds, approx. total wt. 1.44 cts., guarantee stamps, lg. 2 5/8 in., together with Read more…

18kt Gold, Platinum, and Diamond "Etoile" Bangle, Tiffany & Co., the hinged bangle set with ten full-cut diamond melee, in platinum bezels, 24.7 dwt, interior Read more…

18kt Gold, Platinum, and Diamond Bracelet, the hinged bypass bangle with platinum and diamond melee terminals, 34.1 dwt, interior cir. 6 1/2 in. Read more…

18kt Gold, Enamel, Colored Diamond, and Emerald Figural Ring, depicting a big cat set with colored diamond melee, black enamel stripes, and emerald melee eyes, Read more…