Origin
Southern and central Africa
India
Color
Brown, Black, Blue
Colorless, White, gray, Brownish, Greenish
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
-
Elastic
Solubility
-
-
Durability
-
-
Specific Gravity
2.652.78-2.88
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
-
Cleavage
None
Perfect on the {001}
Mohs Hardness
-99992-3
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Luster
-
Vitreous, Silky, Pearly
Pleochroism
Definite: brown reddish-brownWalter Schumann
Weak
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.544-1.5531.552-1.618
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
monoclinic
Birefringence
0.009-9999
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
-
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Reflection
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Awareness