How can you tell if something is gold without hallmark?
Md Ariful Islam
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Dr. Md Rushad Rahman
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It would be needed to test it in a scientific way - by acid testing, or electronic testing, or laser testing. Typically you'll want to find a jewelry appraiser to do that for you. It costs money, but it is highly recommended if you are going to sell jewelry. It would be a poor financial decision to make assumptions on your own.
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