Origin
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
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Color
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Brown, Blue, Green, Yellow, White
Streak
White
White
For which Rashi?
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Planet
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Element of Planets
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Energy
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How to Wear?
Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
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Birthstone
Planetary
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Talisman
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Tenacity
-
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Solubility
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Durability
-
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Specific Gravity
3.26-3.363.32-3.43
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Good on {100}
Poor on {110} and {100} very poor on {001}
Mohs Hardness
6.5-76-7
2
10
👆🏻
Chemical Composition
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
Luster
Vitreous
Vitreous, Resinous
Pleochroism
Strong
slight in colored varieties
Dispersion
0.020.03
0.005
1
👆🏻
Transparency
-
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Refractive Index
1.656-1.7041.703-1.752
1
3.25
👆🏻
Optic Character
Biaxial/+
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Crystal System
Triclinic
tetragonal
Birefringence
0.009-0.0120.004-0.006
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
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Supports heart health
Respiratory
Good
Good
Reproductive
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Digestive
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Psychology
Harmony
Transformation
Healing
Emotional healing
Emotional healing
Qualities Associated
Balance
Transformation