Origin
Southern and central Africa
Canada, Russia, Kenya, Brazil, Norway
Color
Colorless, Greenish, Green, gray, Yellow
Green, Greenish, Black, Reddish, Brown
Streak
White
Yellow, Yellowish-grey, gray
For which Rashi?
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Pisces
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
Healing
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.21-3.383.50-3.60
1
7.18
👆🏻
Fracture
Irregular/uneven, Uneven
Uneven
Cleavage
Perfect on {001}
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
Mohs Hardness
6-76
2
10
👆🏻
Chemical Composition
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.