Origin
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
Switzerland
Color
Violet, Blue
Brown, Brownish, Yellow, Black, Reddish
Streak
-
White, 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
2.56-2.663.7-3.8
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann
Subconchoidal, Conchoidal
Cleavage
Distinct
Distinct on {010}
Mohs Hardness
7-7.57-7.5
2
10
👆🏻
Chemical Composition
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Luster
Vitreous
Resinous
Pleochroism
Strong trichroism: colorless to yellowish
X = colorless; Y = pale yellow; Z = golden yellow
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent
-
Refractive Index
1.542-1.5781.736-1.762
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
-
monoclinic
Birefringence
0.008-0.0120.009-0.015
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Inner vision
Protection
Healing
Emotional healing
Physical healing
Qualities Associated
Intuition
Protection