1 Astrology
1.1 Origin
Madagascar, Sri Lanka
Brazil, Southern and central Africa, Sri Lanka
1.2 Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Red, gray
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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1.8 Energy
Not Available
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1.9 Deities
Not Available
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1.10 Not to wear with
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1.11 Powers
Not Available
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1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
Not Available
Insoluble in acids
2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Not Available
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
2.6 Cleavage
Not Available
{110} good, 100 moderate, parting on {092} and {011}
2.7 Mohs Hardness
2.8 Chemical Composition
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Not Available
Weak to distinct brownish red-green-yellow
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004)
Transparent, Translucent
3.5 Refractive Index
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
Not Available0.296
0
0.296
3.9 Clarity
Gemmological Tables (2004)
Transparent
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
Not Available
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