1 Astrology
1.1 Origin
1.2 Color
Colorless, White, Blue, Colorless, gray, Green, Yellow, White
White, Colorless, Blue, Red, Green, Yellow, Violet
1.4 Streak
1.5 For which Rashi?
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1.7 Planet
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1.9 Element of Planets
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1.11 How to Wear?
1.12.1 Finger
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1.13.2 Ring Metal
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1.14 Energy
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1.16 Deities
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1.18 Not to wear with
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1.20 Powers
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1.22 Birthstone
1.22.1 Planetary
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1.23.2 Talisman
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2 Physical Properties
2.1 Tenacity
3.2 Solubility
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3.4 Durability
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3.6 Specific Gravity
2.42-2.52Not Available
1
7.18
3.9 Fracture
Irregular/uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
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3.11 Cleavage
Perfect on {10 1 0}, poor on {0001}
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3.13 Mohs Hardness
3.15 Chemical Composition
Na 2Ca 2Al 6Si 6O 24(CO 3) 2Walter Schumann , Gemstones of the world (2001) More from other references
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5 Optical Properties
5.1 Luster
Vitreous, Greasy, Pearly
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5.3 Pleochroism
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5.5 Dispersion
5.6 Transparency
Transparent
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5.8 Refractive Index
1.491-1.524Not Available
1
3.25
5.10 Optic Character
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5.12 Crystal System
5.14 Birefringence
0.012-0.025Not Available
0
0.296
5.16 Clarity
Transparent
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6 Benefits
6.1 Physical
6.1.1 Neurological
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7.1.2 Cardiovascular
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7.1.4 Respiratory
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7.1.6 Reproductive
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7.1.8 Digestive
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7.2 Psychology
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7.4 Healing
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7.6 Qualities Associated
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