Item #: 1542804 This is an authentic TIFFANY 18K Yellow Gold Diamond Small Knot Ring size 51 or 5.75. The ring is crafted of 18 karat yellow gold and features a double knot motif set with pave diamonds weighing approximately .05 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.