Year: 2009 This is an authentic ROBERTO COIN 18K White Gold Diamond 2.18ctw Cento Tulip Stud Earrings. The earrings are crafted of 18 karat white gold and feature three-prong set Portuguese-cut diamonds, approximately 2.18 total carat weight, with E color and VS2 clarity. The earrings also feature synthetic rubies on the backings. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.