1 Astrology
1.1 Origin
1.2 Color
Yellow, Reddish, Brown, Brownish, Green, gray, Colorless
Colorless, White, Brownish, Yellow, Brown
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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1.8 Energy
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1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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1.12 Birthstone
1.12.1 Planetary
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1.12.2 Talisman
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2 Physical Properties
2.1 Tenacity
2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.72-2.83Not Available
1
7.18
2.5 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
2.6 Cleavage
Good on {100} and {110}
None
2.7 Mohs Hardness
2.8 Chemical Composition
Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
Vitreous, Pearly
Adamantine
3.2 Pleochroism
Weak; O = colorless to yellow; E = colorless to honey-yellow
NilArthur Thomas
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
3.5 Refractive Index
1.610-1.6471.994-2.040
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
3.9 Clarity
Transparent
Gemmological Tables (2004) More from other references
4 Benefits
4.1 Physical
4.1.1 Neurological
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4.1.2 Cardiovascular
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4.1.3 Respiratory
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4.1.4 Reproductive
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4.1.5 Digestive
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4.2 Psychology
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4.3 Healing
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4.4 Qualities Associated
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