At present, the state has made textual research, identification and judgment on the texture, age, name, function, grade and authenticity of jade unearthed cultural relics and handed down cultural relics. The identification of textured jade depends on visual inspection, mineralogy and gemology to determine the mineral types, chemical composition, crystal structure and physical properties of various jade. Usually, hardness, specific gravity and refractive index can be measured without destroying the original. According to the general concepts of gemmology and mineralogy in the world, jadeite only includes jadeite of alkaline clinopyroxene and nephrite of calcium amphibole, both of which are chain silicate minerals, commonly known as real jade in jade forum.
The real jade in ancient China was nephrite. Eight jades were unearthed from the Chahai site in Fuxin City, Liaoning Province, all of which are genuine jade. Hemudu site of Majiabang culture, the jades produced are fake jade; At the Songze site in Qingpu, Shanghai, the jades produced are mainly genuine jade mixed with fake jade. In the late Liangzhu culture, almost all jades produced at Fanshan and Yaoshan sites in Yuhang were genuine jade. For the identification of texture jade, we need to study its origin, explore the source of ancient jade, study the communication between regions, and the influence and communication between various jade cultures. Yunyang county, Hubei province is known as the hometown of oriental jadeite. Turquoise is rich in pure materials, bright and dazzling, and its colors are mostly sky blue, green, gray blue and pink green, which is extremely rare. The turquoise produced by Yungaishan turquoise mine in Yunxian County has the best grade and is the most precious. According to the Jade Forum, this largest turquoise is now hidden in Yunyang Turquoise Development Company in Hubei Province and needs to be carved into precious works of art. ..