3、 What is Hotan Jade?
Hotan Jade refers to the oldest nephrite produced in Hotan, Xinjiang. Its chemical composition is calcium magnesium silicate, and its mineral composition is a special aggregate composed of amphibole. The Mohs hardness is 6-6.5, the specific gravity is 2.9-3.1, the fracture is uneven, the grease is shiny, translucent to opaque, and the colors are white, blue, yellow, black, red, etc. The color of a piece of material is generally uniform, its chemical composition is stable, and it can withstand strong acid and alkali. It is generally used to make jade carving ornaments and various small pendants and bracelets. It is also the main material of ancient jade products in China.
4、 What is Xiuyu?
Xiuyan County, Liaoning Province is the main producing area of Xiuyu, and it is also produced in Xinyi, Guangdong Province, Huili, Sichuan Province and other places. The chemical composition of Xiuyu jade is hydrous magnesium silicate, and the mineral composition is the aggregate of serpentine and stone minerals. It is composed of fine fibrous and leaf shaped serpentine crystals, and is a very delicate compact block. It has a variety of colors, with light green and yellow green uncommon. Its hardness is 2.5-4.5, specific gravity is about 2.5, and it has grease luster or waxy luster; From translucent to opaque, there are also very few transparent ones, which are similar to organic glass. Due to its low hardness and low output, Xiuyu is a low-grade jade material, which is often used as jade carving and various small pendants, as well as tea sets, wine sets, fitness balls, jade pillows and other living products.
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