Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
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Color
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
Yellow, Green, Black
Streak
White
Yellow, Green, Black, Greenish
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
Brittle
Solubility
-
Soluble
Durability
-
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Specific Gravity
2.57-2.664.1-4.3
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven
Cleavage
Fair on {100}, poor on {001} and {010}
Indistinct on {011}
Mohs Hardness
7-7.53.5-4
2
10
👆🏻
Chemical Composition
Mg2Al4Si5O18
CuFeS 2Anthony et al , Handbook of mineralogy (2001)