Rhyolite and Rubellite Physical Properties
Tenacity
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Not Available
  
Solubility
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Not Available
  
Durability
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Specific Gravity
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3.01-3.06
  
Fracture
Not Available
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
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Not Available
  
Mohs Hardness
7
  
7-7.5
  
Chemical Composition
Not Available
  
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
  
Rhyolite and Rubellite Chemical Formula
While comparing Rhyolite and Rubellite 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 Rhyolite and Rubellite chemical formula.
>- Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Rhyolite and Rubellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rhyolite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhyolite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Rhyolite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.