Item #: 1747688 This is an authentic TIFFANY 18K Yellow Gold Diamond Lock Ring size 52 or 6. The ring is crafted of 18 karat yellow 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.