This is an authentic BULGARI 18K Rose Gold Diamond Black Onyx Serpenti Viper Ring size M. The ring is crafted of 18 karat rose gold and features a snake motif wrap around band accented with a black onyx and round brilliant cut diamonds, approximately .91 total carat weight. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.