In general, jade raw materials can be divided into black sand skin, white sand skin, red sand skin and yellow sand skin. Ebony jade knowledge: mainly refers to the black outer skin. In general, black is caused by a relatively high chromium ion component. More chromium ions tend to cause deep green inside the rough. It may be based on black or it may be full of green materials. Moreover, the water content of the black sand skin varies greatly. Some are dry and the color is not bad. Even if there is green, it can't be made into jewelry; some are full of green and good colors. This kind of material will rise. Therefore, the gambling of the black sand skin is relatively large. White sand skin jade knowledge: Under normal circumstances, the probability of containing green in the jadeite material of white sand skin is very small, especially the probability of bright green. And even if it is colored, it is lighter green. Polyester Plain Voile Fabric,Polyester Printed Plain Voile Fabric,Plain Voile Fabric,Polyester Woven Plain Voile Fabric Shaoxing City Shengfeng Import And Export Co.,Ltd. , https://www.sunfeelfabric.com
July 10, 2021