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https://www.jewelry-auctioned.com/learn/jewelry-how-tos/how-to-tell-if-gold-jewelry-is-real
Nitric Acid Gold Test This method is only recommended for scrap jewelry, not gold jewelry you intend on wearing. Essentially, you make a tiny indent or scratch with a nail file. Then you’ll drop nitric acid …
https://www.sbcgold.com/blog/test-gold-5-simple-ways-spot-fake-gold/
Jul 24, 2014 · Skin Test Skin discoloration from wearing fake gold jewelry is not a myth. For this test, simply hold the gold in your hand for a few minutes. Perspiration on the skin creates a chemical reaction with the gold.
https://www.jewelrynotes.com/how-to-test-if-gold-is-real/
Real gold jewelry is made of a solid gold alloy, whose gold content is above a certain threshold. In the United States, for example, pieces containing less than 58.3% gold (10 karats) are not considered gold for commercial purposes. What people usually refer to as fake gold is jewelry that is made of another metal (such as nickel, copper, silver, etc.) and covered with a layer of gold (gold ...
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