Emerald and Sodalite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Hard
  
Not Available
  
Specific Gravity
2.67-2.78
  
2.15-2.40
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
  
Cleavage
Imperfect on the [0001]
  
Poor on {110}
  
Mohs Hardness
7.5-8
  
5-6
  
Chemical Composition
Be3Al2SiO6
  
Na8Al6Si6O24Cl2
  
Emerald and Sodalite Chemical Formula
While comparing Emerald and Sodalite 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 Emerald and Sodalite chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Sodalite- Na8Al6Si6O24Cl2
Emerald and Sodalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.
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