Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Brazil, Southern and central Africa, Sri Lanka
Color
Blue, Violet, Colorless, Red, Green, Brown
Red, gray
Streak
White
Red, Black
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
-
Insoluble in acids
Durability
-
-
Specific Gravity
3.64-3.664.20-4.30
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Conchoidal
Cleavage
None, but may exhibit slight parting
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
86-6.5
2
10
👆🏻
Chemical Composition
MgAl2O4
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Adamantine
Pleochroism
Absent
Weak to distinct brownish red-green-yellow
Dispersion
0.020.33
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
Refractive Index
1.732.609-2.903
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
tetragonal
Birefringence
-99990.296
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Revitalization
Clarity
Healing
Emotional healing
Physical healing
Qualities Associated
Vitality
Awareness