Origin
Sri Lanka, Southern and central Africa
USA
Color
Blue
White
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
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.104.28-4.42
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
None
Distinct on [010] and [100] poor on [101]
Mohs Hardness
95-5.5
2
10
👆🏻
Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Luster
-
Vitreous
Pleochroism
-
colorless.
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
OpaqueAnthony et al, Opaque, Transparent
Refractive Index
1.757-1.7801.760-1.774
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
monoclinic
Birefringence
0.007-0.0100.012
0
0.296
👆🏻
Clarity
Transparent
OpaqueAnthony et al
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
-
Excellent
Reproductive
-
-
Digestive
-
-
Psychology
Intuition
Optimism
Healing
Emotional healing
Emotional healing
Qualities Associated
Creativity
Optimism