This is an authentic ROBERTO COIN 18K White Gold Diamond .50ctw Solitaire Stud Earrings. The earrings are crafted of 18 karat white gold and feature round brilliant cut diamonds, weighing approximately .50 total carat weight with SI1 clarity and G-H color. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.