Origin
Italy, China
Southern and central Africa
Color
Colorless, White, Blue, gray
Blue
Streak
White
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
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.093.25
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
Perfect on {100} and {010}, imperfect on {101}
Imperfect in one direction
Mohs Hardness
85-5.5
2
10
👆🏻
Chemical Composition
CaAl2Si2O7(OH)2.H2O
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Greasy
Vitreous
Pleochroism
Weak
Trichroic
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.672-1.6761.607-1.672
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
monoclinic
Birefringence
0.019-0.0210.065
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
-
Communication
Healing
Emotional healing
Emotional healing
Qualities Associated
-
Communication