Precious Metals Testing The Key to Determining Precious Metal

Discover a guide to precious metals testing standards, examples of how tests are performed to determine quality, including pictures and video. Learn about the color test, acid test, heft test, magnetism test, touchstone test, fire assay test, torch test, x-ray test, electronic tests, among others.

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Precious Metals Testing The Key to Determining Precious Metal

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Precious Metals Testing The Key to Determining Precious Metal

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