Origin
Southern and central Africa
Southern and central Africa
Color
Brown, Black, Blue
Yellow, Blue, Colorless, White
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
2.653.28-3.31
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Conchoidal
Cleavage
None
None observed
Mohs Hardness
-99996.5-7.5
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.
Luster
-
Vitreous
Pleochroism
Definite: brown reddish-brownWalter Schumann
Colorless
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.544-1.5531.638-1.650
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Hexagonal
Birefringence
0.0090.0130
0
0.296
👆🏻
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
Excellent
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Clarity