last edited: 11/14/11 number of photos: 9
Iolite is cordierite, Mg2Al4Si5O18
cordierite as a mineral
hardness: 7 to 7.5
iolite, faceted: A B C D
iolite, cabochons: A
iolite in jewelry
iolite, earrings: A
iolite, ring: A
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Just credit photos to R.Weller/Cochise College.