Origin
Southern and central Africa
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Color
Yellow, Blue, Colorless, White
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
Streak
White
White
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.28-3.312.57-2.66
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
None observed
Fair on {100}, poor on {001} and {010}
Mohs Hardness
6.5-7.57-7.5
2
10
👆🏻
Chemical Composition
Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.
Mg2Al4Si5O18