Item details Commercial Model #No. 294863 Brand name: Tiffany & Co. Item name: Tiffany & Co. Necklace Teardrop Rock Crystal PT950 Material: Platinum PT950 Part of the clasp pull ring uses 750YG Stone used Rock crystal Size Chain length 40.4 cm (15.91 in) Face width 13.2 mm (0.52 in) x Height 25.5 mm (1.00 in) some errors. Accessories The items listed in the Accessories column and shown in the photos are all of the accessories Also, since the accessories are used, some scratches and dirt.