Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
Color
Blue, Violet, Colorless, Red, Green, Brown
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Streak
White
White
For which Rashi?
Sagittarius, Scorpio
-
Planet
Pluto
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Hephaestus
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Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.64-3.663.26-3.36
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
None, but may exhibit slight parting
Good on {100}
Mohs Hardness
86.5-7
2
10
👆🏻
Chemical Composition
MgAl2O4
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references