Origin
Southern and central Africa
Switzerland
Color
Black, Brownish, Brown
Brown, Brownish, Yellow, Black, Reddish
Streak
Brown
White, gray
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
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.5-4.83.7-3.8
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
None, parting may develop along {111}
Distinct on {010}
Mohs Hardness
5.57-7.5
2
10
👆🏻
Chemical Composition
Fe++Cr2O4
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Luster
-
Resinous
Pleochroism
none.
X = colorless; Y = pale yellow; Z = golden yellow
Dispersion
0.040.02
0.005
1
👆🏻
Transparency
-
-
Refractive Index
2.08-2.161.736-1.762
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
monoclinic
Birefringence
-99990.009-0.015
0
0.296
👆🏻
Clarity
-
-
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
Poor
Good
Reproductive
-
-
Digestive
-
-
Psychology
Vitality
Protection
Healing
Emotional healing
Physical healing
Qualities Associated
Protection
Protection