Realgar and Sodalite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.56
  
2.15-2.40
  
Fracture
(e.g. graphite).
  
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
  
Cleavage
{010} Good
  
Poor on {110}
  
Mohs Hardness
Not Available
  
5-6
  
Chemical Composition
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Na8Al6Si6O24Cl2
  
Realgar and Sodalite Chemical Formula
While comparing Realgar 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 Realgar and Sodalite chemical formula.
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Sodalite- Na8Al6Si6O24Cl2
Realgar and Sodalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Realgar and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Realgar is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.