This is an authentic MARCO BICEGO 18K Yellow Gold Amethyst Citrine Rubellite Jaipur Collar Necklace. The necklace is crafted of 18 karat yellow gold and features a thin wire collar set with three bezel-set round cut amethyst, rubellite, and citrine. Follow this item for alerts. Marco Bicego is a registered trademark of Marco Bicego. FASHIONPHILE is not affiliated with Marco Bicego.