This is an authentic TIFFANY & CO Platinum Diamond Lock Pendant Necklace. This stylish necklace is crafted from platinum and features a lock pendant finished with pave diamonds. It is accompanied by a Tiffany & Co. 16 inch platinum chain. This is an excellent necklace with the unforgettable style of Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.