Origin
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
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Color
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Brown, Yellow, White, Greenish
Streak
White
White, gray
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
-
Brittle
Solubility
-
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Durability
-
-
Specific Gravity
3.26-3.362.7-3.3
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Even
Cleavage
Good on {100}
Perfect on the {001}
Mohs Hardness
6.5-72.5-3.0
2
10
👆🏻
Chemical Composition
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
K(Mg,Fe++)3[AlSi3O10(OH,F)2
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Strong
Strong
Dispersion
0.02-
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.656-1.7041.565-1.625
1
3.25
👆🏻
Optic Character
Biaxial/+
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Crystal System
Triclinic
monoclinic
Birefringence
0.009-0.0120.03-0.07
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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Respiratory
Good
Good
Reproductive
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Digestive
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Psychology
Harmony
Grounding
Healing
Emotional healing
Emotional healing
Qualities Associated
Balance
Grounding