Origin
Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
Color
Red, Brown, Brownish, Black
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Streak
White
White
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
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Not to wear with
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Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.303.26-3.36
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
none
Good on {100}
Mohs Hardness
7-7.56.5-7
2
10
👆🏻
Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references