Did these fake Gold pass those fancy XRF machines? : r/Gold

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Gold Buffalo from APMEX failing XRF : r/Gold

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I had an XRF scan done on my sword. What does the data point to? : r/SWORDS

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I had an XRF scan done on my sword. What does the data point to? : r/SWORDS

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How to distinguish fake gold from real gold - Quora

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For those of you wondering if the costco deal was legit : r/Gold