This is a lovely necklace that was a gift from my husband to match the earrings I have on sale as well. It is a 16 inch Tiffany & CO. gold necklace. The chain is a light, fine link and the charm is a green peridot stone wrapped in a rope pattern of gold. The charm is 1 cm in diameter - just shy of 1/2 inch It is stamped on the back bar across the charm T&Co. and 750 as well as stamped on the flat link to the clasp - which is stamped 750 on one side and TIFFANY & Co. on the other. And the Circle clasp is working well and has a 750 stamp on it. The necklace sits very nicely around the neck. If you have any questions please ask.