Item #: 1474629 This is an authentic CARTIER 18K Pink Gold Diamond Black Onyx MM Amulette de Cartier Pendant Necklace. The necklace is crafted of 18 karat pink gold and features a black onyx lock pendant accented with round cut diamonds, approximately .65 total carat weight. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.