This Gucci necklace and pendant are brand new and are authentic. They are absolutely gorgeous. The chain is 18 inches long and has a beautiful heart shaped pendant that has the open G for Gucci on the side. The pendant is 3/4 of an inch long and 5/8 of an inch wide. This is one of the cutest Gucci necklace and pendant that I've ever seen. It's simple but awesome. It does have the .925 stamp on it for purity. Please check out the pictures to see for yourself thanks. If you have any questions about the necklace and pendant please let me know.