Talk about the traditional golden detection method 1. Bite with your teeth, do you have to bite marks?"After the real gold is bitten with teeth, it will leave a faint teeth marks, because the ductility of gold is very good, a bit soft, impure and hard, and cant bite." In daily life and TV series, this
Talk about the traditional detection method of gold
Talk about the traditional golden detection method 1. Bite with your teeth, you need to bite marks? "After the real gold is bitten with the teeth, it will leave a faint teeth marks, because the golden ductility is very good, a bit soft, impure, biting, biting, biting, biting.No move. "In daily life and TV series, this method of testing gold is more common.It is understood that the hardness of the human teeth is 6, the relatively hardness of gold and silver is 2.53, pure copper is 3, and iron is 4.Many metal materials have a low hardness, leaving obvious bite marks with teeth."Therefore, it is not a scientific basis to distinguish which gold is distinguished by teeth.2. Looking at the color, the more yellow and more pure? The so -called "seven green eight yellow, yellow nine five red", this is the experience of some gold collectors in the past to identify the goldenness of the golden purity through color. Some people even think that the color of the gold is more yellow and more pure.Experts say that golden yellow is the inherent physical properties of gold. Under the condition that there is no analysis of testing, it is not feasible to rely on the flesh to see the color to identify the authenticity.Because gold can be added to other elements and changes color, there is no scientific basis for this method.3. Su suction? "If the gold jewelry contains impurities, suck with iron absorption, if it can be sucking, it means that gold has impurities." Recently, this golden identification has begun to be widely circulated on the Internet."Only iron, cobalt, and nickel metals can be sucking with iron. Therefore, if the gold jewelry is added with other substances, the detection method of iron suction stone cannot be talked about."Wang Xuguang said.

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