Kornerupine
Hardness ( Moh )
" 7
Crystal System
OrthorhombicSpecific Gravity
3.32
Refractive Index
1.665 - 1.700
Birefringence
Colour(s)
Brown, Colorless, Green, Greenish yellow, Yellow
Cleavage
Francture Type
Uneven
Luster
Streak
White
Transparency
Translucent to opaque
Formula
(Mg,Fe2+)4(Al,Fe3+)6(SiO4,BO4)5(O,OH)2
Country
Found In Antarctica,Australia,Canada,China,Colombia,Finland,France,Greenland,India,Kenya,Madagascar,Myanmar,Norway,Russia,Slovakia,South Africa,Sri Lanka,Tajikistan,Tanzania,Uganda,USA,Zambia,Zimbabwe