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Corundum
Name
Corundum
Chemical
Formula
Al2O3
Species
Oxides & Hydroxides
Crystal
System
Trigonal
Mohs
Scale
9
Color
Colorless, gray, brown; pink to pigeon-blood-red, orange, yellow, green, blue to cornflower blue, Purple; may be color zoned, asteriated mainly grey and brown
Luster
Adamantine, Vitreous, Pearly

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