Year: 2016 This is an authentic BULGARI 18K Rose Gold Diamond Serpenti Viper Ring 47 4. The ring is crafted of 18 karat rose gold and features a serpent motif band set with round brilliant cut diamonds, approximately .21 total carat weight. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.