The introduction of Spinel stone

Spinel stone is a family of minerals, in nature, formed in the molten magma intrusion into the impure limestone or dolomite formed by contact metamorphism. Some spinel are in Al-rich magmatic rocks. The best spinel mainly means a magnesium-aluminum spinel. The crystal shape is combination of Octahedral crystal and the octahedral to rhombic dodecahedron. Rich colors, a colorless, pink, red, purple, light purple, blue, purple, blue, yellow, brown and so on. Spinel stone species is devided by the color, such as red, orange, violet, blue spinel. Other place of Olive stone origin is Brazil, Australia, the Czech Republic and Slovakia. In addition, the United States, Hawaii, the former Soviet Union and Kenya are also produced, bution in these areas is not large. Olivine is also a feature of one of the few gems. China Damaping Hebei and Jilin Jiaohe Olivine stone is also an important producer of high-quality olivine. The output green to yellow-green olivine in size of 5mm is more substantial.
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