Origin
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
Southern and central Africa
Color
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Greenish, Blue, Colorless, Green, Yellow
Streak
White
Greenish, gray
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
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Ring Metal
-
-
Deities
-
-
Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.26-3.363.17-3.24
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Good on {100}
(0001) indistinct
Mohs Hardness
6.5-79-9.5
2
10
👆🏻
Chemical Composition
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
SiCArthur Thomas , Gemstones (2009)
Luster
Vitreous
Adamantine
Pleochroism
Strong
-
Dispersion
0.020.10
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.656-1.7042.648-2.691
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
Triclinic
6H polytype
Birefringence
0.009-0.0120.043
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Good
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Reproductive
-
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Digestive
-
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Psychology
Harmony
Clarity
Healing
Emotional healing
-
Qualities Associated
Balance
Creativity