Origin
Southern and central Africa
Southern and central Africa
Color
Green
Black, Brownish, Brown
Streak
-
Brown
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.66-2.864.5-4.8
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven
Cleavage
Indiscernible
None, parting may develop along {111}
Mohs Hardness
7.5-85.5
2
10
👆🏻
Chemical Composition
Al 2Be 3Si 6O 18Martin H.
Fe++Cr2O4
Luster
-
-
Pleochroism
Strongly dichroicMartin H. Read
none.
Dispersion
0.010.04
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.592.08-2.16
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Isometric
Birefringence
0.004-0.010-9999
0
0.296
👆🏻
Clarity
-
-
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Excellent
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Creativity
Vitality
Healing
-
Emotional healing
Qualities Associated
Creativity
Protection