Sugilite and Dumortierite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.69-2.79
  
3.26-3.41
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
  
Cleavage
Poor on {0001}
  
Distinct on {100}, poor on {110}; parting on {001}
  
Mohs Hardness
5.5-6.5
  
7-8.5
  
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
AlAl6O3BSi3O18
  
Sugilite and Dumortierite Chemical Formula
While comparing Sugilite and Dumortierite 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 Sugilite and Dumortierite chemical formula.
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Sugilite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sugilite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.