No there is no way to stamp it. It was bought by the inch. I am positive it is sterling though. If you doubt, please check my past auctions. I am honest and have very good feedback.
I know you can get ripped off on here but I am a trusted seller. with a 100% positive feed back. please view my past auctions I offer very nice things. this is sterling as I have described if you choose not to bid that is your poragative. but if you really like it please bid. you won't be disappointed!