1 Astrology
1.1 Origin
Southern and central Africa
Switzerland, Australia, Brazil
1.2 Color
Colorless, Brown, Greenish, gray
Yellow, Colorless, White, Brownish, Reddish
1.3 Streak
1.4 For which Rashi?
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1.5 Planet
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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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
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven
2.6 Cleavage
From the Greek, oligos and kasein, little cleavage.
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
Vitreous
Vitreous, Adamantine
3.2 Pleochroism
Not Available
Definite dichoric in yellow (yellow to orange-brown)
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004)
Translucent, Transparent
3.5 Refractive Index
1.538-1.5501.918-1.936
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
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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