Moldavite and Sylvite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.32-2.38
  
1.993
  
Fracture
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Uneven, Brittle
  
Cleavage
Not Available
  
Perfect on [100], [010], [001]
  
Mohs Hardness
5.5
  
2.5
  
Chemical Composition
SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
  
Not Available
  
Moldavite and Sylvite Chemical Formula
While comparing Moldavite and Sylvite 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 Moldavite and Sylvite chemical formula.
- Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
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Moldavite and Sylvite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Moldavite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moldavite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Moldavite is 1.993 whereas that of Sylvite is 1.993.