This is an authentic MARCO BICEGO 18K Yellow Gold Diamond Siviglia Graduated Necklace. The necklace is crafted of 18 karat yellow gold and features graduated size textured oval stations and a diamond embellished station weighing approximately .38 total carat weight. Follow this item for alerts. Marco Bicego is a registered trademark of Marco Bicego. FASHIONPHILE is not affiliated with Marco Bicego.