Origin
Russia
Southern and central Africa
Color
Black, Violet, Blue, Green
Black, Brownish, Brown
Streak
-
Brown
For which Rashi?
Gemini, Virgo
-
Planet
Mercury
-
Element of Planets
Earth
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.22-3.404.5-4.8
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
1,2 prismatic.
None, parting may develop along {111}
Mohs Hardness
5-65.5
2
10
👆🏻
Chemical Composition
(Ca,Cr)MgSi 2O 6Gemdat.org , Management Team (2012)
Fe++Cr2O4
Luster
Vitreous
-
Pleochroism
Common trichroism: light green
none.
Dispersion
0.020.04
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.668-1.7032.08-2.16
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Isometric
Birefringence
0.024-0.030-9999
0
0.296
👆🏻
Clarity
-
-
Physical
Neurological
-
-
Cardiovascular
Supports heart health
-
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Renewal
Vitality
Healing
Physical healing
Emotional healing
Qualities Associated
Love
Protection