1 Astrology
1.1 Origin
1.2 Color
Blue, White, Grey, Yellow, Green, Colorless, Red, gray
Yellow, Brown, Black, Colorless, White, Brownish
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
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
Gelatinises in acids
Effervesces in hot HCl
2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Uneven, Conchoidal, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
2.6 Cleavage
Distinct on {110}
[10 1 1] perfect
2.7 Mohs Hardness
2.8 Chemical Composition
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Vitreous
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Not Available
Translucent
3.5 Refractive Index
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
Not Available0.191
0
0.296
3.9 Clarity
Not Available
Translucent
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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