Bytownite and Kyanite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.72-2.75
  
3.53-3.65
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Splintery, Brittle, Metallic
  
Cleavage
Perfect on [001], good on [010], imperfect on [110]
  
[100] perfect [010] imperfect with 79° angle between
  
Mohs Hardness
6-6.5
  
4-7
  
Chemical Composition
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Not Available
  
Bytownite and Kyanite Chemical Formula
While comparing Bytownite and Kyanite 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 Bytownite and Kyanite chemical formula.
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
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Bytownite and Kyanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bytownite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bytownite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Bytownite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.