Origin
-
Southern and central Africa
Color
Brown, Red
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Grey, Black, gray
-
Specific Gravity
4.58-4.65
2.58-2.64
Mohs Hardness
3.5-4.5
6.5-7
Chemical Composition
Fe1-xS
SiO 2Walter Schumann , Gemstones of the world (2001)
Transparency
-
TranslucentWalter Schumann
Refractive Index
3
1.530-1.540
Crystal System
monoclinic
-
Birefringence
-9999
0.004
Clarity
-
TranslucentWalter Schumann
Neurological
-
Enhances mental clarity and focus
Healing
Physical healing
Emotional healing
Qualities Associated
Vitality
Abundance