How does Hetian jade identify it himself, how does Hetian jade identify

Only when you understand this line of work can you talk about it. Otherwise, it can only be determined by the national appraisal department.

How to identify the real and fake Hetian jade.

Hetian jade is mainly identified by density and refractive index.

The density of Hetian jade is in grams of cubic centimeters, the refractive index is in, and it can also be recognized in combination with structure and shell features.

1. Identification of nephrite and Xiuyu.

Hetian jade has certain indicators of its texture, hardness and specific gravity; Xiuyu is produced in Xiuyan County, Liaoning Province, and its texture, hardness and specific gravity are not as good as Hetian jade. In addition, Xiuyu has a large amount of mining, and the material is cheap because of the lot, so the market is very cheap.

Because of its delicate texture, sufficient water head, and flowery to greasy luster, Xiuyu often makes it old to pass off as old Hetian jade. But Xiuyu is softer, easy to eat knives, the best way to identify is to use an ordinary knife to carve a few times, the one who eats the knife is Xiuyu, and the one who does not enter the slightest is Hetian jade. If you don't have a knife around, just look carefully at the knife receiving place when carving, Hetian jade will not be hairy when receiving the knife, while Xiuyu will have hair.

In addition, Xiuyu also feels lighter, and the sound is dull and hoarse when tapping, unlike Hetian jade.

In addition to Xiuyu, there are other ordinary jade stones used to pass off as Hetian jade, and their identification methods are roughly the same as above.

2. Distinguish Hetian jade from Russian jade and Qinghai jade.

China's Qinghai and the former Soviet Union and Central Asia also produce a kind of jade, commonly known as Qinghai jade and Russian jade, which is estimated to be produced by the branches of the Tianshan Mountains, so the ore composition is similar. This jade is mostly white and looks like a waxy grease luster, so it is easy to pass off as white jade. Moreover, its hardness is the same as that of white jade, so it cannot be used to identify its authenticity.

However, the quartz content of this jade is high, so compared with white jade, the quality is coarse, japonica, brittle, and transparent; Frequent exposure to sun, rain and dew makes it easy to diaphragm, cracking and discoloration. In particular, Hetian jade is compared with Russian jade, one glutinous and one japonica; One is white and moisturized, and the other is"Dead white"The difference between superior and inferior is self-evident. At the same time, it is not difficult to distinguish between a crisp sound and a dull sound when striking.

3, Hetian jade"material"of discernment.

It is also common to use glass to pass off as Hetian jade, commonly known as Hetian jade"material"。Generally speaking, the color of the glass is in one go, there is no natural change, and there are bubbles in it (some can be made by carving the bubbles); Its material is relatively pure and pure, unlike Hetian jade, which has jade stems, cotton, radish filaments and other natural crystals; Observed with a magnifying glass, the pores of the glass are much thicker than those of Hetian jade, and the fracture is in the shape of a bright ballast shell, while the Hetian jade is dark and uneven; The hardness of glass is low and it is easy to eat knives, while Hetian jade has high hardness and does not eat knives; In addition, if you stick frit to the sensitive parts of your face, it will be cooler than jade. In addition, one sound is dull and the other is crisp when tapping.

Now Hetian jade seed material is the most expensive, and most of the market is Qinghai jade, Korean jade and Russian jade, as well as kava, which is non-nephrite. Most of the Qinghai jade is as permeable as water and slightly waxy. Most of the Russian jade has sugar, and the black skin is also the biggest feature of Russian jade.

The color of Korean food is mostly blue. Hetian jade seeds have irregular pores, and pores are the biggest feature of Hetian jade seeds! Because this is the trace left by the seed material washed in the river water for thousands of years, and the Hetian jade seed material is oily and delicate to the touch.

Let me tell you how to quickly distinguish whether nephrite is nephrite (nephrite jade has Hetian jade, Russian jade, Qinghai jade): to measure the density, first find an electronic bang, put the jade to be measured on it, and write down the weight.

Then put the jade into a container filled with pure water, (hang it in the middle of the container with a thin thread, do not touch any side of the container.) Write down the weight and divide the first number by the second to get the density.

The method is very accurate, and non-nephrite jade such as kava stone can be ruled out as Hetian jade. Nephrite is usually .