Vesuvianite and Crystal Opal 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
  
1.97-2.22
  
Fracture
Conchoidal, Brittle
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Poor on {110} and {100} very poor on {001}
  
Not Available
  
Mohs Hardness
6-7
  
5.5-6.5
  
Chemical Composition
Not Available
  
SiO 2 + H 2OUlrich Henn and Claudio C.
  
Vesuvianite and Crystal Opal Chemical Formula
While comparing Vesuvianite and Crystal Opal 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 Crystal Opal chemical formula.
>- Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Vesuvianite and Crystal Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vesuvianite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vesuvianite and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Vesuvianite is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.