Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Southern and central Africa
Color
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
White, Blue, gray, Green, Brown
Streak
White
White
For which Rashi?
-
-
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
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.57-2.662.30-2.40
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven, Conchoidal
Cleavage
Fair on {100}, poor on {001} and {010}
{110} Perfect
Mohs Hardness
7-7.5-9999
2
10
👆🏻
Chemical Composition
Mg2Al4Si5O18
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)