7000 years ago, humans had already known jade and began to use it. The name “Jade†originated from the Spanish conquest of Central and South America and is the Spanish word “smart stoneâ€. It is said that the Spaniards at the time believed that this jade had the ability to protect the body and resist various diseases.
In 1863, French scientists confirmed that "jade" is a general term for two different mineral rocks. They are jadeite and nephrite. The boundaries between the two are difficult to define, so they use "jade" as theirs. Common name.
Jadeite and nephrite meet the conditions of “jadeâ€, which are tough, dense and tiny minerals, all of which belong to “true jadeâ€. The representative mineral of jadeite is the jadeite produced in Myanmar. The representative mineral of nephrite is Xinjiang Hetian jade produced in Xinjiang, China.
Dushan jade (defective fossil) produced in Nanyang City, Henan Province, jade jade (serpentine jade) produced in Liaoning, and turquoise (turkey jade) produced in Liyang, Hubei, because it does not meet the main conditions of “jadeâ€, namely The texture is tough and the structure is delicate and compact, so it can only be regarded as “like jade†rather than “true jadeâ€.
"Jadeite" is equivalent to jade. After the jadeite entered China from Myanmar in the early years, this green, smooth and crystal-clear jade immediately robbed the light of nephrite and became a collector's favorite. "Soft jade" is the traditional jade business name traditionally used in China is "羊脂白玉". Its origin is distributed in Xinjiang and Yunnan, China. It was used for Buddhist purposes in the early years, and later it was made into jade, jade, jade belt, jade, jade paper. The jade produced in China is jade jade, Dushan jade, water calcium aluminum garnet jade, hard sodium jade, quartz rock jade and so on.
The English dictionary reads the word "Jadcite" as "Jade" and "Jadeite". Can these two names be drawn equal? ​​According to the analysis of modern jewelers, "Jade" is not exactly equivalent to "Jadeite", but jewelry The term "hard jade" is called "Jade" and "Jade" is also the commercial name of "Jade Jade". From a scientific point of view, jadeite is a collection of dense pyrite-like minerals with high hardness, extremely tough and jadeite as the main component. The chemical formula of jadeite is NaAl(Si 2O6). When it is as high as 99% in jadeite, it is generally white; while in green jade, it usually contains more diopside. In addition, jade may also contain a small amount of calcite, sodium chromite, albite and amphibole.
At the beginning of the 20th century, a precious jadeite mine was discovered on the outskirts of Dexing City, Jiangxi Province, China. The jadeite mine is produced on the surface and is more than 60 meters long and 2 to 5 meters thick. Jade is a mixture of uneven green, yellow and dark green. According to expert appraisal, this mineral deposit belongs to the rare and precious treasure mine of the country, but the jade jade cannot be counted as “true jadeâ€.
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