Origin
Southern and central Africa
Southern and central Africa, Burma, Tanzania, India, Sri Lanka
Color
Brown, Black, Blue
Yellow, White, Green, Brown, Greenish, gray
Streak
-
Grey, 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
2.653.20-3.25
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven, Conchoidal
Cleavage
None
Good/distinct on [210]
Mohs Hardness
-99995.5
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
Mg 2Si 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Vitreous, Pearly
Pleochroism
Definite: brown reddish-brownWalter Schumann
Pale green to pale orange
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.544-1.5531.650-1.680
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Orthorhombic
Birefringence
0.0090.009-0.011
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
-
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Grounding
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Grounding