Hetian jade "has a high price for leather. The skin has the name of sprinkling gold, autumn pear, chicken blood, etc., the cover of the jade belt, one of the things often hundreds of gold, the collector does not get jade, and the treasure is treasure." It can be seen that Daiyu is still very expensive even in modern times. The outer skin of the jade jade can be divided into three types: color skin, sugar skin and stone skin according to its characteristics and appearance. Color skin: A layer of maroon or brownish yellow jade skin distributed on the outer surface of the scorpion jade. As mentioned above, jade has various colors. The jade world is named after various colors, such as black leather, deer skin and so on. From the skin color, you can see the quality of the jade, such as black leather, deer skin, etc., mostly for the finest white jade. The same quality of the jade, such as with autumn pear and other skin color, the value is higher. The thickness of the jade is very thin, generally less than 1 mm. The color skin has various forms, some are cloud-like, some are vein-shaped, and some are scattered. The formation of the color skin is due to the conversion of ferrous oxide in Hetian jade to iron trioxide under oxidizing conditions, so it is secondary. Experienced jade pickers go to the middle and lower reaches to find the jade with color skin; and upstream, there are few opportunities to find the color leather jade. In addition, in the vicinity of the cracks of the original jade ore body, the skin can be found occasionally with the skin, which is also due to secondary oxidation. Sugar skin: refers to a layer of yellow-brown jade skin distributed on the surface of Hetian Yushan. Because the color is like brown sugar, it is called sugar jade. The interior of the sugar jade is sapphire or white jade. The sugar syrup has a large thickness of sugar, ranging from a few centimeters to 20-30 cm. It is often surrounded by white jade or sapphire, which is in a transitional relationship. Sugar jade is produced near the crack of the ore body. The syrup of the sugar jade of the Tatlerkesu jade mine in Qiemo County was studied for oxidation of Hetian jade. Under the polarized light microscope, the rind was composed of tremolite crystallites, which were in the form of braided and interwoven fibers. Under the single polarized light, the light brown iron was distributed in the form of clouds in the tremolite. Stone skin: refers to the surrounding rock surrounded by the surface of Hetian Yushan. One type of surrounding rock is a translucent petrochemical dolomite marble. It is mined together with jade when it is re-exploited. It is attached to the surface of jade. The stone and jade stone of this stone jade has clear boundaries and can be separated. When he is washed and transported by running water or glaciers for a long time, the stone and jade are separated. The other type of surrounding rock is tremolite. For example, in the process of the formation of Hetian jade, the coarse-grained tremolite was replaced. Due to the incomplete confession, the surface of jade is often accompanied by coarse-grained tremolite, which is a transition between jade and jade. The craft industry refers to the yin and yang of jade, and the yin surface refers to the stone of jade appearance. The reason why Hetian jade jade is precious is that the color skin can be used as a jade jade; the second is because the quality of jade is very good. The production of pretty jade, China has a long history, until now, it has also used color skin to form a variety of jade, making it more interesting. Some antiques are more common, such as antique jade cups and antique jade bergamot, which use antique pear skin and tiger skin to make antique display. Printed Spandex,Printed Lycra Fabric,Printed Spandex Fabric,Snakeskin Spandex Fabric CHANGXING JINMAOCHANG TEXTILE CO.,LTD. , https://www.jmcknittedfabric.com