This is an authentic CARTIER 18K Yellow Gold Diamond Chrysoprase XS Amulette de Cartier Pendant Necklace. The necklace is crafted of 18 karat yellow gold and features a green chrysoprase chalcedony stone pendant set with a central diamond, approximately .03 carats. PLEASE NOTE: The necklace is custom sized by Cartier per the CS engraving on clasp. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.