Sugilite and Jet lignite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.69-2.79
  
1.30-1.34
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Not Available
  
Cleavage
Poor on {0001}
  
Not Available
  
Mohs Hardness
5.5-6.5
  
2.5
  
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Not Available
  
Sugilite and Jet lignite Chemical Formula
While comparing Sugilite and Jet lignite 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 Jet lignite chemical formula.
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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Sugilite and Jet lignite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sugilite and Jet lignite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Jet lignite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 1.30-1.34 whereas that of Jet lignite is 1.30-1.34.