Is the custom Bulgari necklace fake?

Bulgari necklace is customized.

BVLGARI is an Italian luxury brand, which belongs to LVMH Group and was founded by Sotirio Bulgari in Rome on 1884.

1905, Via Condotti 10 Bulgari boutique in Rome officially opened. 1977, Bulgari's first generation of BVLGARI Bulgari watches officially came out. 2002/KLOC-official website shows that Bulgari's products mainly include: jewelry, watches, leather goods, accessories, perfume, theme hotels, etc.