Retired design Tiffany & Co. Atlas Collection necklace. The necklace is 17 inches in length, made of 18K yellow gold, and weighs 79.60 DWT (approx. 123.79 grams). Tiffany And Co Earrings, Tiffany And Co Bracelet, Tiffany And Co Jewelry, Tiffany And Co Necklace, Tiffany Diamond, Modern Bracelets, Round Sapphire, Onyx Necklace, Contemporary Pendant