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jewelry pliers wholesale SummarynThe most accurate is the golden tester, which can accurately test the purity of the gold. The cost of the instrument is relatively high. On the ground, the lower the gold content, the greater the elasticity, the higher the jump, the crisp sound, and there are more than the sound; the higher the gold content, the smaller the elasticity, the lower the jump, the sound of the sound is low, and there is no sound. The hardness judgment, the higher the gold content of the jewelry, the softer, the easily bending with your hands, good toughness, not easy to break, leaving clear scratches with hard things; the lower the gold content Bending and easy to break. When scratching with hard things, scratches are not obvious. Finally, you can judge through the middle. The density of gold is the highest metal.nConsultation record · Answer on 2021-05-24nHow to judge the purity of gold? The most accurate is the golden tester, which can accurately test the purity of the gold. The cost of the instrument is relatively high. ，或扔在坚硬的地上，含金量越低，弹性越大，跳得越高，发出清脆的声音，而且有余音；含金量越高，弹性越小，跳得越低，发出的声音低闷，且Without more than no sound, you can also judge through hardness. The higher the gold content of the jewelry, the softer the more soft, and it is easy to bend with your hands. It is easy to bend, good toughness, and not easy to break. You will leave clear scratches with hard things. It can be bent with greater strength, and it is easy to break. When it is engraved with hard things, the scratches are not obvious. Finally, you can judge through the middle. The density of gold is the highest metal. Is the gold bars sold by merchants different inside and outside? Do you want to open it? Generally speaking, it will not be different, nor does it exclude the possibility of mixed with other metals inside. First listen to the sound of the ground, and the real gold throwing cement ground will make a dull snap. On the contrary, the low -colored or fake gold jewelry has rhymes, and the sound is pointed, and there is a slight jump. If there is an abnormality, you need to cut it out and check it. Is it expensive? Not very expensive, the gold bar test is about 300