Cordierite Iolite and Gyrolite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.56-2.66
  
2.48
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Brittle, Uneven, Brittle, Uneven
  
Cleavage
Not Available
  
Perfect on {001}
  
Mohs Hardness
7-7.5
  
2
  
Chemical Composition
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
  
NaCa16Si23AlO60(OH)8•64(H2O)
  
Cordierite Iolite and Gyrolite Chemical Formula
While comparing Cordierite Iolite and Gyrolite 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 Iolite and Gyrolite chemical formula.
- Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
- Chemical formula of Gyrolite- NaCa16Si23AlO60(OH)8•64(H2O)
Cordierite Iolite and Gyrolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Gyrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Gyrolite Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 2.48 whereas that of Gyrolite is 2.48.