Origin
Southern and central Africa
Kazakhstan
Color
Black, Brownish, Brown
Green, Blue
Streak
Brown
Green
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
-
Soluble
Durability
-
-
Specific Gravity
4.5-4.83.25-3.35
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, ConchoidalWalter Schumann
Cleavage
None, parting may develop along {111}
Perfect in three directions
Mohs Hardness
5.55
2
10
👆🏻
Chemical Composition
Fe++Cr2O4
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Vitreous
Pleochroism
none.
Weak; dark emerald green
Dispersion
0.040.04
0.005
1
👆🏻
Transparency
-
TranslucentHerve Nicolas Lazzarelli
Refractive Index
2.08-2.161.644-1.720
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Trigonal
Birefringence
-99990.051-0.053
0
0.296
👆🏻
Clarity
-
TranslucentHerve Nicolas Lazzarelli
Physical
Neurological
-
Aids in mental clarity and focus
Cardiovascular
-
-
Respiratory
Poor
Excellent
Reproductive
-
-
Digestive
-
-
Psychology
Vitality
Emotional Healing
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Emotional Healing