The wine jade, produced in the Wulan County area of ​​Qinghai Province, is a new type of jade discovered in recent years. It belongs to Qinghai jade and has the function of alcoholic liquor. Therefore, it is named Ulan Cuiyu according to the actual place of origin, and it is also named Ulan Meijiu according to its wine function.
The main component of the wine jade is water-containing calcium aluminum garnet. When it is pure, it is white. However, due to the presence of chlorite minerals and trace element chromium (Cr), the jade is green and contains a small amount of diopside. , chromium-containing calcium aluminum garnet, chlorite, zoisite, chrome spinel and calcite. The composition of the mineral is fine, the jade texture is fine, the micro-transparent to opaque, the hardness is 6~7, the density is about 3.5, the refractive index is 1.70~1.73, the gloss is moist and soft, and it is the high quality jade raw material.
Calcium aluminum garnet jade is a unique jade species in Qinghai and is rare in China. Its texture is tough and delicate, the color is green, the luster is soft and moist, and it looks like high-quality jade. Some merchants use it as a substitute for jade, even posing as jade. However, the emerald green of Qinghai jade is mainly chrome-colored, which is different from natural jade, and is easily recognized under the color filter. In addition, the internal structure of jade is completely different from jade. As long as it is carefully observed, it is not difficult to identify.
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