This is an authentic ROBERTO COIN 18K Rose Gold Diamond Mother of Pearl Multi Stone Venetian Princess Carnevale Cigar Band Ring 53 6.5. The ring is crafted of 18 karat rose gold and feature mother of pearl, citrine, blue topaz, iolite, rubellite and round cut diamonds weighing approximately .90 total carat weight. The ring also features the designer's synthetic ruby at the interior of the band. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.