One: fire hair method The most ridiculous thing is to use hair strands wrapped around the jade to burn with a lighter. If it is blown right away, it means it is a fake. If it burns, it is the real thing. Although the jade has good thermal conductivity, but the superb thermal conductivity of the jade can not stop the "second kill" of the flame. In fact, I have tried it in Xiaobian~~~ However, my piece is indeed fake, or plastic. Two: feel cooler Many people think that the jadeite that will cool down on the hand is really jade. In fact, this method is also used in comparison with plastic imitation jade. If you encounter B goods, C goods, D goods, completely check out. Three: Jade Strike Because the crystal particles of jadeite are denser, the percussion is less affected by the propagation of sound waves, and the sound becomes crisper. The B-car jade has been damaged by acid pickling, and its fiber interweaving structure has been damaged and become loose, so the knocking sound is relatively dull. But with the development of fraud, the scientific nature of this method is not so reliable. Now the filling of the B goods has been improved and it is very crisp. There is also a knocking sound that is not only related to density, but also related to stone patterns. The stone-like A-car jade knocking sound is also very dull. And for small beads, ring faces, mosaics, etc., this method is not feasible. Four: drip test Some people think that water drops on the jade, if it is in the shape of a bead, it is A goods, if it is not a bead, it is B goods. In fact, this is to test the jade with the tension formed by the smooth surface of the jade. The method of making B goods is still relatively backward a few years ago, and this method is still feasible. However, in recent years, the B-Jadeite will be subjected to secondary polishing. After the process, the jade surface can be as smooth as the A product, so the drip test method is outdated. Five: Scratch the glass method It should be noted that when a formal merchant purchases jadeite, the salesperson will take out a soft cloth and lay it on the counter. This is not to protect the counter glass, but to protect the jade. It should be noted that most of the glass components are quartz, the hardness is 7, and the hardness of jadeite is 6.5-7; the glass is cryptocrystalline, the hardness is uniform in each orientation, and the jadeite is polycrystalline, and its cleavage has poor hardness. . In summary, whoever moves is really hard to say. Moreover, many jewels with higher hardness can be diced, so it is not possible to identify jade based on the fact that stones can be used to slap glass. The best way to check the authenticity of the jade is to send it to an authoritative appraisal agency for testing. This method is the "Wanjin Oil" that has never changed. How much have you learned? Don't hear people yelling on the road, "the price of jumping off the building, the factory is closed without pay, telling you that this is true, you don't have to try China from the ancient times to the present...", China is publicly and publicly, and the woman said It’s reasonable, but there’s only one truth, don’t be fooled.
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