Alexandrite and Fluorapatite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.69-3.81
  
3.1-3.25
  
Fracture
Not Available
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
  
Cleavage
1,1 ; 3,2.
  
Indistinct
  
Mohs Hardness
8.5
  
5
  
Chemical Composition
BeAl 2 O 4
  
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
  
Alexandrite and Fluorapatite Chemical Formula
While comparing Alexandrite and Fluorapatite 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 Alexandrite and Fluorapatite chemical formula.
- Chemical formula of Alexandrite- BeAl 2 O 4
- Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
Alexandrite and Fluorapatite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Alexandrite and Fluorapatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Fluorapatite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.1-3.25 whereas that of Fluorapatite is 3.1-3.25.