Sapphire and Bytownite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.03
  
2.72-2.75
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Cleavage
None, but may exhibit parting
  
Perfect on [001], good on [010], imperfect on [110]
  
Mohs Hardness
9
  
6-6.5
  
Chemical Composition
Al 2 O 3
  
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Sapphire and Bytownite Chemical Formula
While comparing Sapphire and Bytownite 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 Sapphire and Bytownite chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Sapphire and Bytownite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.
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