Origin
Sri Lanka, Southern and central Africa
Southern and central Africa
Color
Blue
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Not Available
Not Available
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.10
Not Available
Fracture
Not Available
Not Available
Cleavage
Not Available
Not Available
Mohs Hardness
9
Not Available
Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
Not Available
Luster
Not Available
Not Available
Pleochroism
Not Available
Not Available
Dispersion
Not Available
Not Available
Transparency
Transparent, Translucent
TranslucentWalter Schumann, Gemstones of the world (2001)
Refractive Index
1.757-1.780
Not Available
Optic Character
Not Available
Not Available
Crystal System
Not Available
Not Available
Birefringence
0.007-0.010
Not Available
Clarity
Transparent
TranslucentWalter Schumann
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available