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There are some tips for distinguishing gold adulteration. For example, look at the color, the higher the purity of gold jewelry, the darker the color; the weight of gold, the gold jewelry should have a sense of sinking in the hands, the fake gold jewelry will feel light; the sound, the color When more than 99% of the real gold is thrown on the hard ground, it will make a buzzing sound, no sound and no elasticity, and the fake or low-quality gold sound is crisp and not dull, and generally gives a "dangdang" sound, and the sound has a residual sound. After landing, the beating is fierce; look at the mark, the domestic gold jewelry is made according to the international standard, and put on the note, such as "24K" marked "foot red" or "foot gold", 18K gold marked "18K".
However, the level of gold adulteration is high or low, and these simple methods may not be suitable for those “high level†frauds. Therefore, if consumers want to ask for reassurance, they may still need to go to a professional supervision agency for testing.
If the "Thousands of Gold" is doped with antimony or tungsten, a professional precious metal detector can be seen.
In addition, there is a method of destructive testing. If the tester can withstand tens of milligrams of wear, dissolve some of the gold, and send it to a high-resolution plasma mass spectrometer for destructive testing, it can also get very accurate results. However, these tests are subject to a certain fee.
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