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https://www.totaram.com/education/cat/gold-jewelry/post/gold-purity-testing/
The method known as 'fire assay' is the oldest known method of testing gold and continues to be one of the most accurate. When gold is melted, a sample of the gold is taken, either by drilling through the poured bar or by capillary tube sampling while the gold is in a molten state. The sample is weighed very precisely and the weight recorded.
https://www.youtube.com/watch?v=pzaKMePtwik
Aug 13, 2012 · Want to know if your jewelry is real gold? We'll walk you through three at-home methods you can use to verify whether your favorite pieces of jewelry are as ...Author: National Jewelry Liquidation Center
https://www.sbcgold.com/blog/test-gold-5-simple-ways-spot-fake-gold/
Jul 24, 2014 · 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. Skin will discolor (a black or green color) if the gold isn’t real.
https://www.oxfordgoldgroup.com/articles/how-to-test-gold-if-real/
Aug 11, 2020 · The Vinegar Test A lot of metals and minerals react to vinegar’s acidity, and this is one of the easiest and most accurate tests you can perform on gold. All you need is some vinegar, a dropper, and the gold you’re testing. Do this test in a place where no interior lighting can mess with your perception of color.Estimated Reading Time: 8 mins
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