This is an authentic ROBERTO COIN 18K Rose Gold Diamond Smoky Quartz Drop Earrings. The earrings are crafted of 18 karat rose gold and feature round checkerboard cut smoky quartz stones with halos of diamonds, approximately .60 total carat weight. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.