This is an authentic BULGARI 18K White Gold Diamond Blue Topaz Amethyst Parentesi Necklace. The necklace is crafted of 18 karat white gold and features faceted blue topazes and amethysts, along with round brilliant cut diamonds weighing approximately .54 total carat weight. Follow this item for alerts. Bulgari is a registered trademark of Bulgari. FASHIONPHILE is not affiliated with Bulgari.