Item #: 1906526 This is an authentic TIFFANY 18K White Gold Diamond Lock Ring 54 6.75. The ring is crafted of 18 karat white gold and features a polished lock motif band with one half set with diamonds. approximately .14 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.