Dumortierite and Charlesite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.26-3.41
  
1.79
  
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
  
Irregular/uneven, Brittle, Metallic
  
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
  
Perfect on {10bar10}
  
Mohs Hardness
7-8.5
  
2.5
  
Chemical Composition
AlAl6O3BSi3O18
  
Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
  
Dumortierite and Charlesite Chemical Formula
While comparing Dumortierite and Charlesite 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 Dumortierite and Charlesite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Dumortierite and Charlesite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Charlesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Charlesite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 1.79 whereas that of Charlesite is 1.79.