Origin
Southern and central Africa
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Yellow, Blue, Black, Green, gray
Blue, Violet, Colorless, Red, Green, Brown
Streak
White
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
3.43-3.443.64-3.66
1
7.18
👆🏻
Fracture
-
Conchoidal, Uneven
Cleavage
None Observed
None, but may exhibit slight parting
Mohs Hardness
6.5-78
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4
Luster
Vitreous
Vitreous
Pleochroism
visible
Absent
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent, Translucent, Transparent to translucent
Refractive Index
1.696-1.7021.73
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Triclinic
Isometric
Birefringence
0.005-9999
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
-
Good
Reproductive
-
-
Digestive
-
-
Psychology
-
Revitalization
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Vitality