Topaz and Vlasovite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Nearly insoluble in HCl and HNO3
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.49-3.57
  
2.97
  
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Conchoidal, Brittle
  
Cleavage
[001] Perfect
  
Distinct on {010}
  
Mohs Hardness
8
  
6
  
Chemical Composition
Al2SiO4(F,OH)2
  
Not Available
  
Topaz and Vlasovite Chemical Formula
While comparing Topaz and Vlasovite 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 Topaz and Vlasovite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
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Topaz and Vlasovite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Vlasovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Vlasovite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.97 whereas that of Vlasovite is 2.97.