This is an authentic pair of MARCO BICEGO 18K Yellow Gold Diamond Chalcedony Siviglia Drop Earrings. The earrings are crafted of 18 karat yellow gold and feature blue chalcedony stones hanging below pave set diamonds studs, approximately .29 total carat weight. Follow this item for alerts. Marco Bicego is a registered trademark of Marco Bicego. FASHIONPHILE is not affiliated with Marco Bicego.