Origin
Southern and central Africa
Canada, Southern and central Africa, Australia
Color
Brown, Black, Blue
Colorless, White, gray
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
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.652.72-2.75
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven
Cleavage
None
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
-99996-6.5
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
-
Vitreous, Pearly
Pleochroism
Definite: brown reddish-brownWalter Schumann
colorless.
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.544-1.5531.561-1.583
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Triclinic
Birefringence
0.0090.010-0.011
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Clarity