This is an authentic CARTIER 18K White Gold Diamond 6.5mm Logo De Cartier Ring 52 6. The ring is crafted of 18 karat white gold and features the double Cartier C logo accented with round brilliant cut diamonds, approximately .12 total carat weight. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.