Item #: 1889786 This is an authentic TIFFANY 18K Rose Gold Diamond Lock Pendant Necklace. This necklace is crafted of 18 karat rose gold and features a lock pendant motif finished with pave diamonds with a total approximate carat weight of 0.38 carats. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.