Origin
Southern and central Africa
Sri Lanka, Burma, USA, Russia
Color
Brown, Black, Blue
Yellow, Brown, pink, Colorless
Streak
-
White
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.653.46-3.50
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Conchoidal
Cleavage
None
Perfect
Mohs Hardness
-99996-7
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
-
Pleochroism
Definite: brown reddish-brownWalter Schumann
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.544-1.5531.665-1.712
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Orthorhombic
Birefringence
0.0090.036-0.042
0
0.296
👆🏻
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Intuition
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Emotional Healing