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Selenium - a translucent long staple variety of gypsum, calcium sulphate water. Hardness of 2.0 on the Mohs scale, a density of 2.3 g/cm3, a silky luster, pearl. Contains inclusions of sand, clay, hematite, sulfur and organic matter. Other names: dzhandarakand, moonstone.

Selenite soft not only on the physical qualities - his character, if I may say so on the gem, however mild and even moderate. It is extremely common, inexpensive, easy to process, and therefore known to many - but most are automatically classified it as "minor" ornamental minerals, whereas in fact originally selenite was the fourth largest stone Urals. By the way, by the middle of XX century in the Urals workshops annually produces up to 400,000 elephants, and that's not counting selenitovyh boxes, toilet sets, money boxes, figurines in our country selenite literally went to every house.
Views: 903 | Added by: Admin | Date: 11.04.2013 | Comments (0)

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