1 Astrology
1.1 Origin
1.2 Color
Violet, White, gray, Blue, Brown, Black
Blue, Greenish
1.3 Streak
1.4 For which Rashi?
Cancer, Sagittarius, Cancer, Sagittarius, Cancer, Sagittarius
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1.5 Planet
1.6 Element of Planets
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
1.9 Deities
Goddess Whope
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1.10 Not to wear with
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1.11 Powers
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
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2.2 Solubility
2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Uneven
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
SiO2
(Fe2+ ,Mg)Al 2(PO 4) 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
AbsentWalter Schumann
Colorless blueAnthony et al
3.3 Dispersion
3.4 Transparency
Translucent, Translucent to opaque
Gemmological Tables (2004) More from other references
3.5 Refractive Index
1.530-1.5431.639-1.680
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
3.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
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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