Pietersite and Sugilite Physical Properties
Tenacity
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Not Available
  
Solubility
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Not Available
  
Durability
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Specific Gravity
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2.69-2.79
  
Fracture
Not Available
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Not Available
  
Poor on {0001}
  
Mohs Hardness
5
  
5.5-6.5
  
Chemical Composition
Not Available
  
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Pietersite and Sugilite Chemical Formula
While comparing Pietersite and Sugilite 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 Pietersite and Sugilite chemical formula.
>- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pietersite and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pietersite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pietersite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Pietersite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.