Baijing
White crystal
White crystal is a kind of crystal family, transparent and opaque, all transparent also known as colorless crystal, in mineralogy belongs to the quartz family, the main chemical composition is silica, pure natural white crystal silica content as high as 99.999%, chemical formula is SiO2, natural crystal shape for hexagonal column, known as "crystal King".
Introduction of white crystal
Rockcrystal: the king of crystal
Chemical formula SiO2
Crystal system: hexagonal crystal system
Hardness: 7
Specific gravity: 2.60, refractive index: 1.54-1.55
Origin: Brazil, Africa, USA, China
Transparent and pure white crystal is one of the magic gifts of the earth. White crystal is the most widely distributed and the most abundant in the whole crystal group. Generally speaking, white crystal is quartz, but from our point of view, the opaque is called quartz, and the transparent is called white crystal. Most of the white crystals contain ice cracks, clouds and other connotations. Except for the small volume (directly cut from large raw ore), the large volume and completely transparent white crystals are more expensive and there are more fakes on the market. So be careful when you buy.
Distinguish true from false
Look at the contents
In the selection of white crystal, the surface luster of natural crystal is "light cyan", and contains "inclusions", some are bright chips. The appearance of artificial crystal looks very pale and transparent. Some of them contain regular oval flocculent substance, which is the generative layer of artificial crystal. Synthetic crystals are mostly made of beads or plane processing, such as pen shaped pendants, ultrasonic shadow carved Buddha pendants and so on. "Crystal glass" and "melting crystal" have no inclusions at all.
Weight identification
Natural crystals are usually heavier. Natural crystals of the same size are heavier.
Light transmission identification
Natural crystal has birefringence. Under the polarizer, the natural crystal will show the change of light and shade every 90 ° rotation, and the light below can penetrate. The synthetic crystal is dim, and the light under it can't penetrate. Crystal glass and melting crystal are even dimmer.
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Chinese PinYin : Bai Jing
Baijing
