Yes According to relevant public information, the logo and letters will be different according to different versions and years on the market. Generally speaking, there will be letters or signs such as Cartier, 750, 18K, PT950 on the back of a Cartier leopard necklace, indicating its material, brand, origin and other information. Cartier leopard necklace is one of the classic jewelry styles of Cartier family. It was designed by Cartier designers. Made of 18K gold or platinum, inlaid with diamonds or black-spotted agate, it is unique, exquisite and beautiful.