Sphene and Sugilite Physical Properties
Tenacity
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Solubility
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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
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Poor on {0001}
  
Mohs Hardness
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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
  
Sphene and Sugilite Chemical Formula
While comparing Sphene 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 Sphene 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
Sphene and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sphene and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sphene and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Sphene is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.