Origin
China, Canada
Southern and central Africa
Color
Green, Yellow, Brown, White, gray, Black
Black, Brownish, Brown
Streak
-
Brown
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
2.90-3.104.5-4.8
1
7.18
👆🏻
Fracture
Splintery, Granular
Uneven
Cleavage
None
None, parting may develop along {111}
Mohs Hardness
6-6.55.5
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Fe++Cr2O4
Luster
Vitreous, Greasy
-
Pleochroism
None
none.
Dispersion
0.010.04
0.005
1
👆🏻
Transparency
Translucent
-
Refractive Index
1.600-1.6272.08-2.16
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Isometric
Birefringence
0.027-9999
0
0.296
👆🏻
Clarity
Translucent
-
Physical
Neurological
Aids in mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Emotional Balance
Vitality
Healing
Physical healing
Emotional healing
Qualities Associated
Healing
Protection