Chrome Tourmaline and Alexandrite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.85-3.35
  
3.69-3.81
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
  
Not Available
  
Cleavage
3,2
  
1,1 ; 3,2.
  
Mohs Hardness
7-7.5
  
8.5
  
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas.
  
BeAl 2 O 4
  
Chrome Tourmaline and Alexandrite Chemical Formula
While comparing Chrome Tourmaline 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 Chrome Tourmaline and Alexandrite chemical formula.
- Chemical formula of Chrome Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas.
- Chemical formula of Alexandrite- BeAl 2 O 4
Chrome Tourmaline and Alexandrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chrome Tourmaline and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrome Tourmaline and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Chrome Tourmaline is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.