Origin
Southern and central Africa
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Color
Yellow, Blue, Black, Green, gray
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
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Brittle
Solubility
-
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Durability
-
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Specific Gravity
3.43-3.442.7-3.3
1
7.18
👆🏻
Fracture
-
Uneven, Even
Cleavage
None Observed
Perfect on the {001}
Mohs Hardness
6.5-72.5-3.0
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
K(Mg,Fe++)3[AlSi3O10(OH,F)2
Luster
Vitreous
Vitreous, Pearly
Pleochroism
visible
Strong
Dispersion
0.02-
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.696-1.7021.565-1.625
1
3.25
👆🏻
Optic Character
-
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Crystal System
Triclinic
monoclinic
Birefringence
0.0050.03-0.07
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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Physical
Neurological
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Enhances mental clarity and focus
Cardiovascular
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Respiratory
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Good
Reproductive
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Digestive
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Psychology
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Grounding
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Grounding