2. The suet jade is delicate in texture and as white as coagulated fat. It is the best variety of white hetian jade. Only Xinjiang has it in the world, and its output is very rare and extremely precious. In addition, topaz is also very rare, and its value is second only to suet jade. Color distribution from light cyan to dark cyan, a wide range of different shades. It is the most colorful of Hetian jade, so the price is slightly lower than other colors.
3. Observe whether it is translucent. There are three kinds of jade: transparent, translucent and opaque, and Hetian jade is translucent. In the light, it can transmit light, but it can't see the transmitted object clearly. You can aim the jade at the light source and shake it behind the jade with your hands. Really, Hetian jade can see shadows shaking.
4. From the sound point of view, Hetian jade is crisp and loud because of its thick and moist quality and solid pulse. You can knock two identical jade pieces a few times. If the voice is dumb, it is not hetian jade. Hetian jade's voice is as clear as steel.
5. Look at its texture. Hetian jade is moist, delicate and soft, with oily luster on the surface. Other jade is not as oily as Hetian jade. In addition, jade can be placed on the skin, and it will feel cold, while glass products do not.
Extended data
1, hardness
Hardness is one of the important signs to identify Hetian jade, which refers to the ability of minerals to resist the invasion of external mechanical forces (such as carving, pressing and grinding). ) Mohs hardness commonly used in gemology refers to engraving hardness. In the jewelry industry, hardness is generally regarded as an important symbol to distinguish gems from jade.
2. Toughness
Toughness is usually the inherent bonding ability of jade, that is, the ability to resist external pressure or crushing force. Toughness is characterized by hard fracture and wear resistance. Nephrite has great toughness, which other jadeites do not have, and can be used as a fine workmanship. The great toughness of Hetian jade is inseparable from its unique felt-like structure. ?
Step 3 color
Color is not only an important criterion for evaluating the quality of Hetian jade, but also the main basis for its classification. Compared with nephrite in other areas at home and abroad, Hetian jade has more colors and formed its own series. The ancients said: yellow is like steamed millet, white is like cutting fat, and black is like pure paint, which is called jade symbol. ?
4. Transparency
Transparency is the degree to which jade allows visible light to pass, which is mainly related to the absorption of light by jade. Mineralogy is generally divided into three types: transparent, translucent and opaque. To identify the transparency, we should polish the jade and see through other objects under a certain thickness, which can be divided into four levels: transparent body, Translucence, Micro-transparent body and Non-transparent body.
Baidu encyclopedia-Hotan jade