Origin
Southern and central Africa
Afghanistan, Italy
Color
Black, Brownish, Brown
Blue, Colorless
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
4.5-4.82.55-2.65
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
None, parting may develop along {111}
Perfect {10 1 0}
Mohs Hardness
5.55.5-6
2
10
👆🏻
Chemical Composition
Fe++Cr2O4
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Luster
-
Vitreous
Pleochroism
none.
-
Dispersion
0.040.02
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
2.08-2.161.523
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Trigonal
Birefringence
-99990.006
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Poor
Good
Reproductive
-
-
Digestive
-
-
Psychology
Vitality
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Communication