Pyrope and Cordierite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
insoluble in water
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.62-3.87
  
2.57-2.66
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Subconchoidal, Conchoidal, Brittle
  
Cleavage
None
  
Fair on {100}, poor on {001} and {010}
  
Mohs Hardness
7-7.5
  
7-7.5
  
Chemical Composition
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
Mg2Al4Si5O18
  
Pyrope and Cordierite Chemical Formula
While comparing Pyrope and Cordierite 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 Pyrope and Cordierite chemical formula.
- Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Cordierite- Mg2Al4Si5O18
Pyrope and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrope and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.