This is the kind of chain, which comes free with most silver or mixed metal Anita Mayer pendant bought on this website, but you can also buy this product separately, if you wish. The chain is 18″ or 45cm long and at least 2mm thick. The catch is stamped 925 for Sterling silver. The chain weighs 10.73 grams, which is substantial weight for a chain. The chain is brand-new and is in mint condition.