Year: 2000 This is an authentic CARTIER 18K White Gold Pink Tourmaline Tank Ring 47 4. This elegant ring is crafted of 18 karat white gold and features a square faceted princess cut pink tourmaline stone at the center. Enjoy this sophisticated design with the classic style only from Cartier! Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.