Origin
Southern and central Africa
Brazil, Southern and central Africa, Sri Lanka
Color
Black, Brownish, Brown
Red, gray
Streak
Brown
Red, Black
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
-
Insoluble in acids
Durability
-
-
Specific Gravity
4.5-4.84.20-4.30
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
None, parting may develop along {111}
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
5.56-6.5
2
10
👆🏻
Chemical Composition
Fe++Cr2O4
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
-
Adamantine
Pleochroism
none.
Weak to distinct brownish red-green-yellow
Dispersion
0.040.33
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
2.08-2.162.609-2.903
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
tetragonal
Birefringence
-99990.296
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Poor
Good
Reproductive
-
-
Digestive
-
-
Psychology
Vitality
Clarity
Healing
Emotional healing
Physical healing
Qualities Associated
Protection
Awareness