Tip - How is Gold Checked for Purity?

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Published 9 years, 1 month(s) ago | Submitted by Luca Colciago

How is Gold Checked for Purity?

It's not easy to check gold to see how pure it is.

For further reading: http://www.livescience.com/29188-how-to-check-gold.html

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Posted: 9 years, 1 month(s) ago

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