Origin
Southern and central Africa
Canada, Southern and central Africa
Color
Black, Brownish, Brown
Green, Yellow, Red
Streak
Brown
White
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
4.5-4.83.28-3.32
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
None, parting may develop along {111}
{101} Distinct
Mohs Hardness
5.56-6.5
2
10
👆🏻
Chemical Composition
Fe++Cr2O4
ThCa 2Si 8O 20Walter Schumann , Gemstones of the world (2001) More from other references
Luster
-
Vitreous
Pleochroism
none.
-
Dispersion
0.040.03
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
2.08-2.161.593-1.596
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Tetragonal Trapezohedral H-M Symbol (4 2 2) Space Group: I 422
Birefringence
-99990.001
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
Poor
-
Reproductive
-
-
Digestive
-
-
Psychology
Vitality
Personal power
Healing
Emotional healing
Physical healing
Qualities Associated
Protection
Vitality