Year: 2000 This is an authentic CARTIER 18K White Gold Pink Tourmaline Tank Ring size 48 4.5. This elegant band is crafted of 18 karat white gold and features a central square faceted pink tourmaline stone. Enjoy this sophisticated ring with the one of a kind style only from Cartier! Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.