Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Southern and central Africa
Color
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
Brown, Reddish, pink, orange
Streak
White
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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
-
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Specific Gravity
2.57-2.663.82-4.00
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
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Cleavage
Fair on {100}, poor on {001} and {010}
{???} Indistinct
Mohs Hardness
7-7.55.5
2
10
👆🏻
Chemical Composition
Mg2Al4Si5O18
Mn2+9(SiO 4) 4(OH,F) 2Anthony et al , Handbook of mineralogy (2001)