This is an authentic TIFFANY Platinum Diamond Round Lock Pendant Necklace. The necklace is crafted of platinum and features a round lock motif pendant pave-set with round brilliant cut diamonds, approximately .48 total carat weight. PLEASE NOTE: One diamond has been reset. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.