This is an authentic TIFFANY 18K Rose Gold Lock Ring 50 5.25. The ring is crafted of 18 karat yellow gold and features a polished lock motif band. PLEASE NOTE: This ring is engraved a size 5.5, due to the construction the ring has a wider fit and a circumference is 50.6mm. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.