1 Astrology
1.2 Origin
Sri Lanka
Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA
1.4 Color
Red, Blue, Green, Brown, Black
Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black
1.7 Streak
1.10 For which Rashi?
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2.3 Planet
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2.7 Element of Planets
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2.9 Energy
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2.10 How to Wear?
2.11.1 Finger
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2.13.1 Ring Metal
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2.15 Deities
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2.17 Not to wear with
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2.18 Powers
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2.19 Birthstone
2.19.2 Planetary
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3.1.1 Talisman
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4 Physical Properties
4.1 Tenacity
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4.3 Solubility
4.5 Durability
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1.2 Specific Gravity
2.8 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
2.9 Cleavage
2.10 Mohs Hardness
4.4 Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
5 Optical Properties
5.1 Luster
Vitreous
Greasy, Vitreous
5.2 Pleochroism
5.3 Dispersion
7.3 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
7.4 Refractive Index
1.770-1.7801.770-1.820
1
3.25
8.6 Optic Character
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8.7 Crystal System
8.8 Birefringence
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0
0.296
9.3 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
10 Benefits
10.1 Physical
10.1.1 Neurological
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10.1.2 Cardiovascular
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10.1.3 Respiratory
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10.1.4 Reproductive
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10.1.5 Digestive
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10.2 Psychology
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10.3 Healing
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10.4 Qualities Associated
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