Origin
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
Southern and central Africa
Color
Violet, Blue
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
2.56-2.664.5-4.8
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann
Uneven
Cleavage
Distinct
None, parting may develop along {111}
Mohs Hardness
7-7.55.5
2
10
👆🏻
Chemical Composition
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Fe++Cr2O4
Luster
Vitreous
-
Pleochroism
Strong trichroism: colorless to yellowish
none.
Dispersion
0.020.04
0.005
1
👆🏻
Transparency
Transparent
-
Refractive Index
1.542-1.5782.08-2.16
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
-
Isometric
Birefringence
0.008-0.012-9999
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Inner vision
Vitality
Healing
Emotional healing
Emotional healing
Qualities Associated
Intuition
Protection