1 Astrology
1.1 Origin
Sri Lanka
Madagascar, Sri Lanka
1.2 Color
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Brown, Brownish, Black, Colorless, Green, gray
White, Colorless, Blue, Red, Green, Yellow, Violet
1.3 Streak
White, Brownish, Brownish, White
Not Available
1.4 For which Rashi?
Not Available
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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
2.3 Durability
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2.4 Specific Gravity
2.7 Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Not Available
2.8 Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
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2.9 Mohs Hardness
2.13 Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
3 Optical Properties
3.1 Luster
Adamantine, Greasy
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3.2 Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
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3.3 Dispersion
3.5 Transparency
Transparent, Translucent
Gemmological Tables (2004)
3.6 Refractive Index
3.7 Optic Character
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3.8 Crystal System
3.9 Birefringence
0.096-0.098Not Available
0
0.296
3.10 Clarity
Transparent
Gemmological Tables (2004)
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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