Bytownite and Cymophane Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.72-2.75
  
3.69-3.81
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Not Available
  
Cleavage
Perfect on [001], good on [010], imperfect on [110]
  
Not Available
  
Mohs Hardness
6-6.5
  
8.5
  
Chemical Composition
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
BeAl 2O 4Arthur Thomas , Gemstones (2009)
  
Bytownite and Cymophane Chemical Formula
While comparing Bytownite and Cymophane 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 Cymophane chemical formula.
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Cymophane- BeAl 2O 4Arthur Thomas , Gemstones (2009)
Bytownite and Cymophane Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bytownite and Cymophane Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bytownite and Cymophane Optical Properties during the identification of gemstone. Specific gravity of Bytownite is 3.69-3.81 whereas that of Cymophane is 3.69-3.81.