Sapphire and Amazonite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.03
  
2.55-2.57
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Cleavage
None, but may exhibit parting
  
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
  
Mohs Hardness
9
  
6-6.5
  
Chemical Composition
Al 2 O 3
  
KAlSi3O8
  
Sapphire and Amazonite Chemical Formula
While comparing Sapphire and Amazonite 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 Amazonite chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Amazonite- KAlSi3O8
Sapphire and Amazonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Amazonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Amazonite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.55-2.57 whereas that of Amazonite is 2.55-2.57.
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