Jasper is a translucent soft green jade with spinach, which is not uniform in color and structure. It sometimes contains epidote, magnetite and chromophore. The mineral composition of nephrite is mainly composed of tremolite-positive stone, and the chemical composition is silicate of calcium, magnesium and iron, and the hardness is 6-6.5. Fine texture, grease or waxy luster, slippery. Used to make utensils or crafts. The jade craftsmanship in China is accustomed to refer to jadeite (mostly green) produced abroad.
Jasper is a variety of nephrite. In China, Mars County, the southern margin of the Junggar Basin, has the largest output, so Jasper is also called “Ma Na Si Yuâ€. Jasper is used to make utensils, and some are used to produce jewelry and jade. It is also a superior choice for jade carving crafts. The texture of jasper is as delicate as dark green gel, and there are few flaws.
After the middle of the Qing Emperor Qianlong, Jasper became the jade species commonly used in the palace. They also used to draw on painting, sculpture, arts and crafts, and collected traditional practices such as Yinxian, Yangxian, Pinggong, Hidden, and Hollow, and attracted foreigners. Art influences and adapts to create and develop a jade craft with strong craftsmanship and decoration. There are distinct characteristics of the times and high artistic attainments.
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