Origin
Sri Lanka
Italy, Canada
Color
Blue
Blue, Red, Yellow, Colorless, Green, White
Streak
-
White
For which Rashi?
Sagittarius, Scorpio
-
Planet
Pluto
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Hephaestus
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.65-4.552.90-3.10
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
None, but may exhibit slight parting
Poor/indistinct on {1120} and {1011}
Mohs Hardness
7.5-87
2
10
👆🏻
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Luster
Vitreous
Vitreous
Pleochroism
-
Pale green
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.735-1.7901.614-1.666
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Trigonal
Birefringence
-99990.014-0.032
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
-
-
Reproductive
-
-
Digestive
-
-
Psychology
Empowerment
Emotional healing
Healing
-
Emotional healing
Qualities Associated
Transformation
Emotional Healing