Cordierite and Hematite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.57-2.66
  
5.00-5.30
  
Fracture
Subconchoidal, Conchoidal, Brittle
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
  
Cleavage
Fair on {100}, poor on {001} and {010}
  
None, may show partings on {0001} and {10 1 1}
  
Mohs Hardness
7-7.5
  
6
  
Chemical Composition
Mg2Al4Si5O18
  
Fe 2O 3Arthur Thomas , Gemstones (2009)
  
Cordierite and Hematite Chemical Formula
While comparing Cordierite and Hematite 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 Cordierite and Hematite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Cordierite and Hematite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.