Origin
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Blue, Green, Brownish, Greenish, Colorless, gray
Streak
White
White
For which Rashi?
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Planet
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Element of Planets
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Energy
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How to Wear?
Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
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Birthstone
Planetary
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Talisman
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Tenacity
-
Tough
Solubility
-
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Durability
-
-
Specific Gravity
3.26-3.363.20-3.26
1
7.18
👆🏻
Fracture
Conchoidal
Splintery
Cleavage
Good on {100}
{010} perfect
Mohs Hardness
6.5-76-7.5
2
10
👆🏻
Chemical Composition
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)