This is an authentic ROBERTO COIN 18K White Gold Diamond 1.00ctw Inside Out Hoop Earrings. The earrings are crafted of 18 karat white gold and features round brilliant cut diamonds, weighing approximately 1.00 total carat weight, along with synthetic rubies on the inside. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.