Jade, also known as jadeite, jadeite and Burmese jade, is a kind of jade. The correct definition of jadeite is fibrous aggregate composed of pyroxene minerals, mainly jadeite minerals. But jade is not equal to jade.
Jadeite is a kind of stone polycrystalline aggregate that reaches the jade level under geological action. It is mainly composed of jadeite or jadeite, sodium (sodalite) and sodalite (omphacite), and may contain amphibole, feldspar, chromite and limonite.
In ancient times, jade was a bird that lived in the south. Its coat color is very beautiful, usually blue, green, red and brown. Generally, the male of this bird is red and called "Fei", and the female is green and called "Cui".
"Tengyue Local Records" written by Inch Kaitai records: "Tengyue was collected by jade workers, made into utensils and sold in Yunnan and Chongqing provinces. Top grade jadeite is mostly sent to eastern Guangdong, Shanghai, Fujian, Zhejiang and Kyoto. During the Wanli period of the Ming Dynasty, this place was once under the jurisdiction of Yongchang Prefecture (now Baoshan City, Yunnan Province). Due to historical reasons, jadeite, known as the "Oriental Treasure", was imported into China through border cities such as Tengchong and Ruili.
Extended data:
Classification of jadeite:
Permission: Grade A jadeite refers to the jadeite that is naturally produced. It is only processed, carved, polished and polished by physical methods, and no chemical or irradiation methods are used to improve its internal structure.
The new A-type jadeite refers to adding color to the color root on the basis of A-type jadeite. It is particularly important to note that this jadeite colored article has no fluorescence reaction and does not change its specific gravity. "Emerald A Certificate" will be issued by lax appraisal agency. This kind of jadeite is sold in the jewelry market and even in many famous shops. If you buy jade with collectible value, remember to be cautious.
B goods (bleached and polymer imprinted jadeite) were treated by pickling, bleaching and glue injection.
C goods (coated jadeite) dyeing treatment. Used for jadeite dyeing. Whether it is acid leaching bleaching or filling with glue, artificially colored jadeite is called C goods.
Baidu Encyclopedia _ Jade