Origin
Switzerland
Brazil
Color
Brown, Brownish, Yellow, Black, Reddish
Blue
Streak
White, gray
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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
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Solubility
-
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Durability
-
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Specific Gravity
3.7-3.82.60-2.90
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Conchoidal
Cleavage
Distinct on {010}
Indistinct
Mohs Hardness
7-7.57.5-8
2
10
👆🏻
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Be 3Al 2Si 6O 18Ulrich Henn and Claudio C.
Luster
Resinous
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Pleochroism
X = colorless; Y = pale yellow; Z = golden yellow
Strong dichroism: blue to colourless\
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.736-1.7621.560-1.604
1
3.25
👆🏻
Optic Character
-
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Crystal System
monoclinic
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Birefringence
0.009-0.0150.003-0.010
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
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Respiratory
Good
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Reproductive
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Digestive
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Psychology
Protection
Communication
Healing
Physical healing
Emotional healing
Qualities Associated
Protection
Communication