Vesuvianite and Topaz Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Vesuvianite is virtually insolouble in acids
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.32-3.43
  
3.49-3.57
  
Fracture
Conchoidal, Brittle
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Poor on {110} and {100} very poor on {001}
  
[001] Perfect
  
Mohs Hardness
6-7
  
8
  
Chemical Composition
Not Available
  
Al2SiO4(F,OH)2
  
Vesuvianite and Topaz Chemical Formula
While comparing Vesuvianite and Topaz 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 Vesuvianite and Topaz chemical formula.
>- Chemical formula of Topaz- Al2SiO4(F,OH)2
Vesuvianite and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vesuvianite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vesuvianite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Vesuvianite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.