1.Hardness is tested with a knife: the Mohs hardness of Hetian jade is about 65. Scratching with a knife generally does not leave traces. However, many imitations now also choose to use jade with high hardness, which also does not leave a trace.
2.Density test: Densitometry with water is one of the easiest ways to identify Hetian jade. First of all, weigh the jade and record the weight A, then put the water cup on the electronic scale to zero, tie the jade with a thin wire and put it into the water cup, without touching the bottom of the cup, and record the weight B. Finally, divide A by B to get the density of the jade. The density of Hetian jade is 29-3.1。
3.Collision sound: Natural Hetian jade has a high density, and it will make a crisp and loud sound when struck. You can use two pieces of Hetian jade to listen to it, if the sound is hoarse, it may be a low-density non-natural Hetian jade.
4.Observe the internal structure: Illuminate Hetian jade with a strong light, it is translucent and can transmit light. Under the strong light, Hetian jade presents a cotton-wool-like and felt-like structure. If it is not transparent or has no structure, it is not a real Hetian jade.
5.Inspection Certificate: As a valuable jade, Hetian jade is usually accompanied by an appraisal certificate. If the merchant does not provide a certificate, it can ask for one. It is the most convenient and fast way to check the authenticity of the certificate on the official website through the code on the certificate, and it is also suitable for novices. If a fake certificate is discovered, a lawsuit can be filed in court.
6.Weigh by hand: When buying, you can weigh the same volume of jade by hand, Hetian jade is relatively heavy, solid and thick, and generally heavier than other jade.
7.Observe the texture: Hetian jade has a moist, delicate and soft texture, and the surface has an oily luster, while the moisturizing and oily luster of other jade is not as good as that of Hetian jade. In addition, there will be a cooling sensation when jade is placed on **, while glassware does not.
8.Check the pores: Xinjiang Hetian jade seed material has natural "pores", and when observed under a magnifying glass, you can see pits of different sizes and irregular arrangement, which is different from artificially made Hetian jade.