Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Italy, Canada
Color
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
Blue, Red, Yellow, Colorless, Green, White
Streak
White
White
For which Rashi?
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-
Planet
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-
Element of Planets
-
-
Energy
-
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How to Wear?
Finger
-
-
Ring Metal
-
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Deities
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Not to wear with
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Powers
-
-
Birthstone
Planetary
-
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Talisman
-
-
Tenacity
Brittle
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Solubility
-
-
Durability
-
-
Specific Gravity
2.57-2.662.90-3.10
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven, Conchoidal
Cleavage
Fair on {100}, poor on {001} and {010}
Poor/indistinct on {1120} and {1011}
Mohs Hardness
7-7.57
2
10
👆🏻
Chemical Composition
Mg2Al4Si5O18
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references