Origin
Southern and central Africa
-
Color
Brown, Black, Blue
Blue, gray, Black
Streak
-
Blue
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
2.653-3.15
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Conchoidal
Cleavage
None
Good on [110] and on [001]
Mohs Hardness
-99996.0-6.5
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
[ ]Na2(Mg3Al2)Si8O22(OH)2
Luster
-
Vitreous, Pearly
Pleochroism
Definite: brown reddish-brownWalter Schumann
Strong
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.544-1.5531.606-1.637
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
monoclinic
Birefringence
0.009-9999
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Communication
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Peace