Jade, the full name of jade, is a beautiful mineral. It is also a kind of stone, which is delicate and hard, shiny and slightly transparent, and can be carved into handicrafts: ~ stone. ~ equipment. ~ seal (the imperial seal). Classification of jade: jade in a broad sense also includes colored stones, which is the so-called fake jade, including white marble and white jade. In addition, jade in a broad sense also includes diamonds, agates, crystals, amber, turquoise, corals, pearls and other precious stones. According to GIG's research, jade can be divided into nephrite and jadeite. Nephrite is a traditional jade material in China, and its name comes from nephrite. Because nephrite is produced in Hotan area of Xinjiang, people often call nephrite "Hotan jade". The hardness of nephrite is generally 5.6-6.5 degrees, and it is opaque or translucent. Nephrite can be divided into the following categories by color: white jade, topaz, sapphire, (blue white jade), jasper, black jade, flower jade and Tang jade. Jadeite refers to jadeite produced in Myanmar. Whether nephrite or jadeite, their texture is very hard and their colors are very bright, so they are known as "the king in the stone". Jade is inherently valuable, and it has become priceless after being processed and carved by skilled craftsmen. With the development of the times, jade has gradually formed a jade culture.