1 Astrology
1.1 Origin
Southern and central Africa
India
1.3 Color
Red, Brown, Red, Red, Black
Blue, Greenish, Greenish, Blue
1.5 Streak
Brownish, Red, Brownish, Red
Blue, White
1.1 For which Rashi?
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1.2 Planet
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1.5 Element of Planets
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1.9 Energy
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1.0 How to Wear?
1.0.1 Finger
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1.4.1 Ring Metal
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1.8 Deities
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1.13 Not to wear with
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1.18 Powers
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1.21 Birthstone
1.22.1 Planetary
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1.28.1 Talisman
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2 Physical Properties
2.1 Tenacity
3.4 Solubility
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3.8 Durability
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5.2 Specific Gravity
5.85-6.152.25-2.33
1
7.18
6.8 Fracture
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Brittle, Metallic, Brittle, Metallic
6.9 Cleavage
Fair in four directions forming octahedrons
Good on {010}
6.11 Mohs Hardness
6.23 Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca(VO)Si4O10•4(H2O)
7 Optical Properties
7.1 Luster
Adamantine
Vitreous, Pearly
7.2 Pleochroism
visible
Visible: X=Z= colorless Y= blue
7.3 Dispersion
11.7 Transparency
TranslucentWalter Schumann
Not Available
11.9 Refractive Index
11.18 Optic Character
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11.20 Crystal System
11.22 Birefringence
Not Available0.009
0
0.296
12.2 Clarity
TranslucentWalter Schumann
Not Available
13 Benefits
13.1 Physical
13.1.1 Neurological
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13.2.1 Cardiovascular
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13.3.1 Respiratory
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13.5.1 Reproductive
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13.7.0 Digestive
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14.2 Psychology
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16.1 Healing
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16.2 Qualities Associated
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