Vishnevite and Lapis lazuli Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
2.50-3.00
  
Fracture
Brittle, Uneven
  
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Perfect
  
3,6
  
Mohs Hardness
5-6
  
5.5
  
Chemical Composition
Not Available
  
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
  
Vishnevite and Lapis lazuli Chemical Formula
While comparing Vishnevite and Lapis lazuli 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 Vishnevite and Lapis lazuli chemical formula.
>- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Vishnevite and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vishnevite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vishnevite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Vishnevite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.