Origin
Southern and central Africa
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
Color
Colorless, Greenish, Green, gray, Yellow
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
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
Brittle
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Solubility
-
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Durability
-
-
Specific Gravity
3.21-3.383.26-3.36
1
7.18
👆🏻
Fracture
Irregular/uneven, Uneven
Conchoidal
Cleavage
Perfect on {001}
Good on {100}
Mohs Hardness
6-76.5-7
2
10
👆🏻
Chemical Composition
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references