This is an authentic TIFFANY Platinum Diamond Round Lock Pendant Necklace. This stylish necklace is crafted from platinum and features a lock pendant with a cut out keyhole and is finished with pave diamonds with a total approximate carat weight of 0.42 carats. This is an excellent necklace with the unforgettable style of Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.