Crystal Quartz Facts

Crystal Quartz Facts

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Crystal Quartz  Properties

Chemical Composition It is Silicon Dioxide the chemical formula is SiO2.
Colours Colourless, White, Gray, Pink, Purple, Brown and Black.
Streak White
Varieties Amethyst, Citrine, Rock crystal, Smoky quartz, Rose quartz, Chalcedony, Agate, Chrysoprase, Sardonyx, Onyx, Carnelian, Flint, Jasper and Bloodstone.
Specific Gravity 2.65
Refractive Index 1.54-1.55
Luster Glassy to vitreous
Hardness 7 Mohs.
Solid State Transparent to translucent
Pleochroism None
Fractures Conchoidal.
Bi-refringence 0.009
Crystal System Trigonal Crystal System.
Cleavage None
Enhancement Not enhanced
Source World side occurrence. Brazil, USA, UK, Scotland, Russia, Mexico, Germany, Montana, Switzerland and Madagascar.
Precautions Only general gemstone precautions are required.
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