Year: 2018 This is an authentic PIAGET 18K Rose Gold Diamond Malachite Possession Pendant Necklace. The necklace is crafted of 18-karat rose gold and features a polished malachite and a round brilliant cut diamond, approximately .05 carat. . Follow this item for alerts. Piaget is a registered trademark of Piaget. FASHIONPHILE is not affiliated with Piaget.