1 Astrology
1.1 Origin
Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA
USA
1.2 Color
Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black
Yellow, Red, Green, Colorless, orange
1.3 Streak
White
Yellow, yellowish orange
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
3.95-4.305.50-5.90
1
7.18
2.5 Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
2.6 Cleavage
none
On {10 1 0}, perfect; parting on {000 1 }
2.7 Mohs Hardness
2.8 Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
Greasy, Vitreous
Subadamantine, Resinous
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
TransparentRobert C. Kammerling, The Journal of Gemmology (1995) More from other references
3.5 Refractive Index
1.770-1.8202.013-2.029
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
Not Available0.016
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentRobert C. Kammerling
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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