Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma, Origins: Brazil
Color
Blue, Violet, Colorless, Red, Green, Brown
Greenish, Green, Brownish, Red, Blue, Brown, gray
Streak
White
White
For which Rashi?
Sagittarius, Scorpio
-
Planet
Pluto
-
Element of Planets
-
Earth, Water
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Hephaestus
-
Not to wear with
-
-
Powers
-
Healing
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.64-3.663.69-3.81
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
None, but may exhibit slight parting
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
88.5
2
10
👆🏻
Chemical Composition
MgAl2O4
BeAl 2 O 4
Luster
Vitreous
Vitreous
Pleochroism
Absent
X = red; Y = yellow-orange; Z = emerald-green
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.731.746-1.763
1
3.25
👆🏻
Optic Character
-
Biaxial/+
Crystal System
Isometric
Orthorhombic
Birefringence
-99990.007-0.013
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent