ok I looked at it really close and.I didn't see a stamp but.it.is 20 years old my grandma gave.it.to me and the clasp has been.replaced so.that is not.real gold I asked my grandma and she is positive is it 24 caret all I really have is word of mouth but I did tests on it and it have proven to be gold I'm sorry that it is not still stamped due to wear of age