This is an authentic TIFFANY & CO 18K White Gold Diamond Signature X Pendant Necklace. This stylish necklace is 18K white gold necklace features a X pendant with finished with pave diamonds. It is accompanied by a Tiffany & Co. 16 inch white gold chain. This is an excellent necklace with the unforgettable style of Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.