Worth it. According to Bulgari official website's inquiry, Bulgari's black ceramic diamond necklace is real gold diamond, with high cost performance and excellent value for money. It belongs to big-name jewelry, with good reputation, high product addition ratio, fine workmanship and perfect texture, and is worth buying. Bulgari is an Italian luxury brand, and its products mainly include jewelry, watches, leather goods, accessories, perfumes, theme hotels and so on.