1 Astrology
1.1 Origin
Sri Lanka
Southern and central Africa
1.3 Color
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Brown, Brownish, Black, Colorless, Green, gray
Yellow, Blue, Black, Green, gray
2.1 Streak
White, Brownish, Brownish, White
White
2.3 For which Rashi?
Not Available
Not Available
3.3 Planet
Not Available
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3.5 Element of Planets
Not Available
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3.7 Energy
Not Available
Not Available
3.10 How to Wear?
3.10.1 Finger
Not Available
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3.10.2 Ring Metal
Not Available
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3.12 Deities
Not Available
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3.13 Not to wear with
Not Available
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3.14 Powers
Not Available
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3.15 Birthstone
3.15.1 Planetary
Not Available
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3.15.2 Talisman
Not Available
Not Available
4 Physical Properties
4.1 Tenacity
4.2 Solubility
4.3 Durability
Not Available
Not Available
4.4 Specific Gravity
6.86-7.033.43-3.44
1
7.18
4.11 Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
4.12 Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
None Observed
4.13 Mohs Hardness
6.6 Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
7 Optical Properties
7.1 Luster
Adamantine, Greasy
Vitreous
7.2 Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
visible
7.3 Dispersion
7.8 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
7.9 Refractive Index
1.990-2.1051.696-1.702
1
3.25
7.16 Optic Character
Not Available
Not Available
7.17 Crystal System
7.18 Birefringence
9.7 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
10 Benefits
10.1 Physical
10.1.1 Neurological
Not Available
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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
Not Available
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