Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Color
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
Green, Brown, Colorless, Greenish, Yellow
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
-
-
Durability
-
-
Specific Gravity
2.57-2.663.25-3.45
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Conchoidal, Uneven
Cleavage
Fair on {100}, poor on {001} and {010}
Good on {110}
Mohs Hardness
7-7.56.5
2
10
👆🏻
Chemical Composition
Mg2Al4Si5O18
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references