Cordierite Iolite and Andradite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.56-2.66
3.70-4.10
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Not Available
none
Mohs Hardness
7-7.5
6.5-7
Chemical Composition
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Cordierite Iolite and Andradite Chemical Formula
While comparing Cordierite Iolite and Andradite 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 Andradite chemical formula.
- Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
- Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Cordierite Iolite and Andradite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.