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Cat s Eye
Cat s Eye

Cordierite Iolite
Cordierite Iolite



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Cat s Eye
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Cordierite Iolite
1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.4 Solubility
Not Available
Not Available
1.6 Durability
Not Available
Not Available
1.7 Specific Gravity
3.5-3.82.56-2.66
Amber
1 7.18
1.8 Fracture
Not Available
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
1.9 Cleavage
1,1 ; 3,2
Not Available
1.10 Mohs Hardness
8.57-7.5
Amber
2 10
1.11 Chemical Composition
BeAl 2 O 4
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.