Polishing of gold jewels A stranger came home offering to clean and polish gold jewels. Is it safe to entrust jewellery to him?

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Polishing of gold jewels A stranger came home offering to clean and polish gold jewels. Is it safe to entrust jewellery to him?

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Often such people use some kind of liquid/acid in which some of the gold will dissolve. Your jewels may glitter after the wash but you would have lost some of the precious metal.