Item #: 1617847 This is an authentic CARTIER 18K White Gold Diamond 6mm Tank Francaise Ring size 52 or 6. The ring is crafted of 18 karat white gold and features a Tank de Cartier motif band with pave-set round brilliant cut diamonds weighing approximately .72 total carat weight. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.