There are some hair like scratches for testing and for wear and tear on clasp and charm and in link but hardly noticeable. Tried home tested it with a tiny scratch a in glass of vinegar and lemon and baking soda and the procedure made it cleaner & shinier plus it did not tarnish or changed color. The description says bronze and gold and the other specific properties are uncertain, but there's is no silvery metal visible after shaving a portion it surely did not turn green or did not tarnish.
With those data seems like for as long as care and love is givin, it can last a lifetime. Please read thoroughly the descriptions and make final decisions..