Corundum and Chrome Tourmaline Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.90-4.05
  
2.85-3.35
  
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
  
ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
None – parting in 3 directions
  
3,2
  
Mohs Hardness
9
  
7-7.5
  
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
  
Tourmaline is a series of several different minerals with unique chemical formulas.
  
Corundum and Chrome Tourmaline Chemical Formula
While comparing Corundum and Chrome Tourmaline 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 Corundum and Chrome Tourmaline chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Chrome Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas.
Corundum and Chrome Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Chrome Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Chrome Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.85-3.35 whereas that of Chrome Tourmaline is 2.85-3.35.