Crystal Quartz and Jet Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
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1.19-1.35
  
Fracture
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ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
  
Cleavage
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Mohs Hardness
7
  
2.5-4
  
Chemical Composition
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Crystal Quartz and Jet Chemical Formula
While comparing Crystal Quartz and Jet physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Crystal Quartz and Jet chemical formula.
Crystal Quartz and Jet Specific Gravity
Another important criteria for qualitative analysis of gemstones is Crystal Quartz and Jet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Quartz and Jet Optical Properties during the identification of gemstone. Specific gravity of Crystal Quartz is 1.19-1.35 whereas that of Jet is 1.19-1.35.