1 Astrology
1.1 Origin
Not Available
Southern and central Africa
2.3 Color
Black, Blue, Yellow, Green
Blue, Colorless, White
2.5 Streak
Grey, Greenish, Brown
White
2.7 For which Rashi?
Not Available
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
2.10 Planet
2.13 Element of Planets
2.15 Energy
Not Available
Not Available
2.16 How to Wear?
2.16.1 Finger
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2.16.3 Ring Metal
Not Available
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2.17 Deities
3.2 Not to wear with
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3.3 Powers
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3.5 Birthstone
3.5.1 Planetary
Not Available
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3.6.1 Talisman
Not Available
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4 Physical Properties
4.1 Tenacity
4.2 Solubility
Not Available
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4.3 Durability
Not Available
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4.4 Specific Gravity
3.28-3.442.45-2.58
1
7.18
4.13 Fracture
Uneven, Splintery, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
4.14 Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
None
4.15 Mohs Hardness
6.4 Chemical Composition
Not Available
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
7 Optical Properties
7.1 Luster
7.2 Pleochroism
X = blue
NilArthur Thomas
7.3 Dispersion
7.9 Transparency
Not Available
Gemmological Tables (2004) More from other references
7.10 Refractive Index
1.680-1.6981.583-1.608
1
3.25
7.17 Optic Character
Not Available
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7.18 Crystal System
7.19 Birefringence
9.5 Clarity
Not Available
Gemmological Tables (2004) More from other references
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
Not Available
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