Origin
Southern and central Africa
Southern and central Africa
Color
Blue
Black, Brownish, Brown
Streak
Blue
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
3.254.5-4.8
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
Imperfect in one direction
None, parting may develop along {111}
Mohs Hardness
5-5.55.5
2
10
👆🏻
Chemical Composition
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Fe++Cr2O4
Luster
Vitreous
-
Pleochroism
Trichroic
none.
Dispersion
0.010.04
0.005
1
👆🏻
Transparency
Transparent
-
Refractive Index
1.607-1.6722.08-2.16
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Isometric
Birefringence
0.065-9999
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Communication
Vitality
Healing
Emotional healing
Emotional healing
Qualities Associated
Communication
Protection