Origin
Southern and central Africa
Tanzania, Sri Lanka, China
Color
Blue
Colorless
Streak
Blue
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
3.253.60-3.61
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Imperfect in one direction
Imperfect/fair/absent
Mohs Hardness
5-5.58-8.5
2
10
👆🏻
Chemical Composition
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
Vitreous
Pleochroism
Trichroic
Weak
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent
-
Refractive Index
1.607-1.6721.70-1.73
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Hexagonal
Birefringence
0.0650.055
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Communication
Transformation
Healing
Emotional healing
Physical healing
Qualities Associated
Communication
Spiritual Growth