NecklacesFrench Gold and Citrine Necklace, c.198018 karat yellow gold, citrine, and diamond necklace, with bezel set diamonds set to fluted gold and citrine flowers, made in France, c. 1980. Convertible Mid-Century Platinum and Gemstone ChainsUnusual platinum, European cut diamond and cabochon sapphire, emerald, and ruby chains, worn either as a long necklace or converted to three bracelets, c.1950. Schlumberger for Tiffany & Co. Long Chain NecklaceYellow gold link chain necklace, by Schlumberger for Tiffany & Co., New York, c. 1960.Fine Victorian Amethyst NecklaceVery fine antique yellow gold and oval shaped amethyst necklace, English, c. 1890.Antique Gold and Turquoise NecklaceAntique yellow gold and turquoise fringe necklace, probably American, c. 1900. Art Nouveau Long Chain, FranceFrench yellow gold and pearl long chain, with pearl-set flower petals links, by Henri Dubret, made in France, c.1900. Art Deco Diamond Long ChainPlatinum and European cut diamond long chain containing 152 diamonds weighing a total of about 30.00 carats, c. 1930. Yellow Gold and Diamond Fringe NecklaceYellow gold and diamond fringe necklace with bezel set round diamonds weighing a total of about 20.00 carats.Burma Ruby Pendant Brooch by Marcus & Co.Antique platinum top, yellow gold back, diamond and ruby pendant brooch, signed Marcus & Co., New York, c. 1900. Graduated Diamond Rivière NecklacePlatinum and diamond graduated rivière necklace containing about 20.00 carats of diamonds (the central diamond weighing about .70 carat). Antique American Gold and Pearl NecklaceAntique yellow gold and pearl revivalist necklace, American, c. 1880. Contemporary Sapphire Bead NecklaceContemporary yellow gold and sapphire bead necklace. Sapphire and Diamond Necklace, BulgariPlatinum, diamond and sapphire trefoil motif necklace, containing about 19.50 carats of sapphires and 7.50 carats of diamonds, by Bulgari, Italy, c. 1990.Art Deco Sapphire and Diamond NecklacePlatinum, diamond and sapphire channel necklace set with baguette diamonds and buff-top sapphires, the clasp with a cabochon star sapphire and diamond surround, New York, circa 1930.Yellow Gold Wave Link Necklace, Chaumet Yellow gold wave link necklace by Chaumet, Paris, c. 1980. Diamond, Sapphire, and Moonstone Longchain NecklacePlatinum, diamond, cabochon sapphire and moonstone long chain necklaces, by Fred Leighton, New York, c. 1970. View More