Origin
Southern and central Africa
USA, Mexico
Color
Black, Brownish, Brown
Green, Brown, Greenish, Black
Streak
Brown
Greenish, 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
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.5-4.83.19-3.56
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
None, parting may develop along {111}
{110} Perfect, {010} Indistinct
Mohs Hardness
5.55.5-6
2
10
👆🏻
Chemical Composition
Fe++Cr2O4
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Luster
-
Vitreous, Resinous
Pleochroism
none.
Pale green
Dispersion
0.040.02
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
2.08-2.161.671-1.774
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Poor
Good
Reproductive
-
-
Digestive
-
-
Psychology
Vitality
Courage
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Grounding