1 Astrology
1.1 Origin
Afghanistan, Southern and central Africa
Southern and central Africa
1.3 Color
Blue, Greenish, Violet
Greenish
1.6 Streak
Blue, White
Not Available
1.9 For which Rashi?
Not Available
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1.12 Planet
Not Available
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1.14 Element of Planets
Not Available
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1.17 Energy
Not Available
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1.20 How to Wear?
1.21.1 Finger
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1.22.2 Ring Metal
Not Available
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1.24 Deities
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1.26 Not to wear with
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1.29 Powers
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1.32 Birthstone
1.33.1 Planetary
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1.34.2 Talisman
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2 Physical Properties
3.2 Tenacity
4.2 Solubility
4.5 Durability
Not Available
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4.8 Specific Gravity
4.13 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Not Available
4.16 Cleavage
Imperfect on {110}
Not Available
4.19 Mohs Hardness
4.21 Chemical Composition
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)
6 Optical Properties
6.1 Luster
7.2 Pleochroism
Not Available
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7.6 Dispersion
7.11 Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004)
7.12 Refractive Index
7.19 Optic Character
Not Available
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7.20 Crystal System
7.21 Birefringence
Not Available0.046-0.050
0
0.296
9.8 Clarity
Gemmological Tables (2004) More from other references
OpaqueUlrich Henn and Claudio C. Milisenda
10 Benefits
10.1 Physical
10.1.1 Neurological
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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
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