Blue spinel and Topazolite Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
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3.70-4.10
  
Fracture
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ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
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Mohs Hardness
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6.5-7
  
Chemical Composition
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Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
Blue spinel and Topazolite Chemical Formula
While comparing Blue spinel and Topazolite 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 Blue spinel and Topazolite chemical formula.
>- Chemical formula of Topazolite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Blue spinel and Topazolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Blue spinel and Topazolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue spinel and Topazolite Optical Properties during the identification of gemstone. Specific gravity of Blue spinel is 3.70-4.10 whereas that of Topazolite is 3.70-4.10.