1 Astrology
1.1 Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Sri Lanka
1.3 Color
Blue, Green, Brownish, Greenish, Colorless, gray
Red, Brown, Black
1.5 Streak
1.7 For which Rashi?
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1.10 Planet
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1.12 Element of Planets
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1.13 Energy
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1.1 How to Wear?
1.2.1 Finger
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1.3.1 Ring Metal
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1.1 Deities
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1.4 Not to wear with
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1.8 Powers
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1.12 Birthstone
1.13.1 Planetary
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1.17.1 Talisman
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2 Physical Properties
3.3 Tenacity
3.9 Solubility
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3.12 Durability
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3.17 Specific Gravity
3.20-3.262.97-3.14
1
7.18
5.8 Fracture
Splintery
Uneven, Conchoidal, Brittle
5.10 Cleavage
{010} perfect
{1011} Indistinct
5.12 Mohs Hardness
6.5 Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
8 Optical Properties
8.2 Luster
Vitreous, Subadamantine, Silky
Vitreous
8.4 Pleochroism
Colourless to pale brown to yellow
Pale yellow colorlessAnthony et al
8.7 Dispersion
9.6 Transparency
Transparent, Translucent
Transparent
9.7 Refractive Index
1.653-1.6851.614-1.666
1
3.25
9.15 Optic Character
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9.16 Crystal System
Orthorhombic
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9.18 Birefringence
0.020-0.0220.014-0.032
0
0.296
10.2 Clarity
11 Benefits
11.1 Physical
11.1.1 Neurological
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11.1.2 Cardiovascular
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11.1.3 Respiratory
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11.1.4 Reproductive
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11.1.5 Digestive
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11.2 Psychology
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11.3 Healing
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11.4 Qualities Associated
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