Crystal Quartz and Iolite Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
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2.6-2.7
  
Fracture
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Cleavage
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3,1
  
Mohs Hardness
7
  
7-7.5
  
Chemical Composition
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Mg2Al4Si5O18
  
Crystal Quartz and Iolite Chemical Formula
While comparing Crystal Quartz and Iolite 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 Iolite chemical formula.
>- Chemical formula of Iolite- Mg2Al4Si5O18
Crystal Quartz and Iolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Crystal Quartz and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Quartz and Iolite Optical Properties during the identification of gemstone. Specific gravity of Crystal Quartz is 2.6-2.7 whereas that of Iolite is 2.6-2.7.