Fineness Many people tend to mistake the size of the seed jade structure as a delicate degree. In fact, this is not the case. The fineness is the size of the particles inside the white jade. The difference between seed and mountain materials, as well as Russian and Qinghai materials, is mainly in the degree of fineness. The particles of the seed material are generally much smaller than various kinds of mountain materials, which is why the seed material will have better quality than the Russian material. The reason for the oiliness and feel. Why use sheep fat to describe the top white jade seed is because the sheep fat is very delicate, there is a feeling that it can melt it, only the fineness of the tray will have this feeling. In addition, if the density is good enough, the polished jade will have a strong jade texture. The so-called jade texture is a soft and strong luster, but also contains a strong internal light. Jade pieces with strong jade texture are born with a noble atmosphere. Interlacing degree The interweaving degree of the seed material is what we usually call the structure. It is used to measure the intertwining and interweaving of the crystals in the white jade. The interweaving degree is the basis for the toughness of the jade material. In short, the more fully interwoven the jade, the better the toughness. What kind of structure (interlacing degree) is the best, is it that the side light does not see the structure? This is not true. In fact, many Qinghai materials are basically invisible to the sidelights. This shows that the Qinghai material is incompletely intertwined and has insufficient toughness. It is soft to cut and crisp at the same time. Therefore, in general, Qinghai is in three producing areas. The worst quality, Russian material is much better than Qinghai material, at least can see the cloud structure, although the general structure is large, indicating that the interweaving is not enough, the structure of the material (interlaced) has directionality, so the direction is cut In the direction of the field, it is easy to break up, and some directions are good. In short, white jade needs to be interwoven, and the finer the toughness, the better the toughness. For the jade material, it is not light-staining and the structure is not visible. The side light can see a very fine and uniform structure, which is a good material in terms of interlacing. Density Density is an indicator of the size of the grain gap of the seed. The density is not equal to the density. Although it has a great relationship with the density, the density is not the structure that everyone usually refers to. How do you see the density? If it is the material to be opened, the density is to see if the trace of the saw blade is oily. How does the finished product see the density? The density of the finished product is to look at the gloss, and the gloss is strong and the density is generally high. Purity Purity is the purity of jade, is the index of cotton, stiff flowers, jade flowers, ochre, water lines, lines, etc., are these things not necessarily good jade? In fact, this is not the case. Purity is only an indicator, and it needs to be combined with other indicators. Microfiber Socks,Microfiber Cosy Socks,Purple Thick Microfiber Cosy Socks,Thick Microfiber Floor Socks Jingjiang Pingdong Import&Export Co.,Ltd , https://www.jjpdsocks.com