This is an authentic TIFFANY & CO 18K Yellow Gold Diamond Emblem Lock Pendant Necklace. This lovely necklace is collar length and is 18 karat yellow gold. The pendant is a simply delightful lock in 18 karat gold embellished with four eye catching diamonds for a total carat weight of .08. This a lovely 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.