Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
USA, Southern and central Africa
Color
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
Brown, Green, White, gray, Blue, Yellow
Streak
White
White
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.57-2.664.00-4.65
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven, Sub-Conchoidal
Cleavage
Fair on {100}, poor on {001} and {010}
Perfect on [1011]
Mohs Hardness
7-7.55-5.5
2
10
👆🏻
Chemical Composition
Mg2Al4Si5O18
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references