Green Quartz, a type of crystal. The main chemical composition is silicon dioxide. The chemical formula is SiO2. green crystal is green due to the presence of magnesium and iron compounds. Fancy cut, brilliant, and rare.
[Green Quartz]
Chemical composition: silicon dioxide
Chemical formula: SiO2
Crystal system: tripartite crystal system
Hardness: 7
Luster: Glassy
Transparency: transparent - translucent
Refractive index: 1.544-1.553
Birefringence: 0.009
.
Origin
The green crystal produced in Minas Gerais, Brazil, is a green variety of amethyst transformed by heat treatment.
There are also several places in China where green crystals are found, among which Donghai County, Jiangsu Province, is the richest, followed by Yunnan Province and Xishan Mountain, Beijing.Two types of green crystal mines were found in Donghai County, Jiangsu Province, in 1991, one of them is a green crystal family, with a single crystal size of 1-1.5 centimeters, and with complete crystals but with poor transparency; the other is a yellowish-green lump with strong grease and luster, and with larger lumps.
[Cultivated Green Crystal]
Artificially cultivated green crystal hardness of 7 degrees, light green to dark green, transparent, the body is uniformly pure. This kind of crystal has good purity, good shape, beautiful color, and the same material composition as natural crystal, there is no difference in international standards.
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