Amazonite and Alexandrite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.57
  
3.69-3.81
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Not Available
  
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
  
1,1 ; 3,2.
  
Mohs Hardness
6-6.5
  
8.5
  
Chemical Composition
KAlSi3O8
  
BeAl 2 O 4
  
Amazonite and Alexandrite Chemical Formula
While comparing Amazonite and Alexandrite 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 Amazonite and Alexandrite chemical formula.
- Chemical formula of Amazonite- KAlSi3O8
- Chemical formula of Alexandrite- BeAl 2 O 4
Amazonite and Alexandrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amazonite and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amazonite and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Amazonite is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.