1 Astrology
1.1 Origin
1.3 Color
Colorless, White, Yellow, White, Greenish, gray, Brown, Colorless, Yellow
Yellow, Red, Green, Colorless, orange
1.1 Streak
White
Yellow, yellowish orange
1.5 For which Rashi?
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1.8 Planet
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1.12 Element of Planets
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1.16 Energy
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1.19 How to Wear?
1.19.1 Finger
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1.22.1 Ring Metal
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1.25 Deities
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1.29 Not to wear with
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1.32 Powers
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1.35 Birthstone
1.35.1 Planetary
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1.38.1 Talisman
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3 Physical Properties
3.4 Tenacity
4.3 Solubility
4.6 Durability
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5.4 Specific Gravity
3.30-3.405.50-5.90
1
7.18
5.13 Fracture
Conchoidal, Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
5.16 Cleavage
{010} perfect, {110} distinct, {100} in traces
On {10 1 0}, perfect; parting on {000 1 }
5.19 Mohs Hardness
7.2 Chemical Composition
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
9 Optical Properties
9.2 Luster
Pearly
Subadamantine, Resinous
9.5 Pleochroism
9.6 Dispersion
9.11 Transparency
Transparent
TransparentRobert C. Kammerling, The Journal of Gemmology (1995) More from other references
9.13 Refractive Index
1.702-1.7502.013-2.029
1
3.25
9.20 Optic Character
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9.23 Crystal System
9.26 Birefringence
10.2 Clarity
Transparent
TransparentRobert C. Kammerling
11 Benefits
11.1 Physical
11.1.1 Neurological
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12.2.2 Cardiovascular
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12.2.4 Respiratory
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13.1.3 Reproductive
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13.1.6 Digestive
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13.2 Psychology
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13.4 Healing
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13.6 Qualities Associated
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