This is an authentic CARTIER 18K White Gold Diamond Screwdriver Pendant Necklace. This stunning necklace is 18 karat white gold and hangs beneath the collar. The pendant is a drum of screws around the base and .10 carats of diamonds at the top. This is a lovely and edgy necklace with the classic style of Cartier! Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.