This is an authentic CARTIER 18K White Gold Diamond Tank Francaise Ring size 52 or 6. The ring is crafted of 18 karat white gold and features the iconic "Tank" inspired band accented with diamonds, approximately 2.08 total carat weight. This is an elegant ring with the classic style of Cartier! Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.