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Gem Resources International
Gem Resources
PO Box 62006
Minneapolis, MN 55426


Phone/Text:(612)327-7374
E-Mail: gri@gemresources.com
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Kyanite

Structure : Triclinic
Hardness : 5 or
Specific Gravity : 3.68
Refractive index : 1.71 - 1.7
Doubly Refracting (bi-refraction) : 0.017

 
 
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