1 Astrology
1.1 Origin
Let us know how we can update this page, (Click for more details), Not Available, Southern and central Africa
the type locality
1.2 Color
1.3 Streak
1.4 For which Rashi?
1.5 Planet
1.6 Element of Planets
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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
Black Madonna, Isis
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1.10 Not to wear with
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1.11 Powers
Courage, Wealth
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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
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2.3 Durability
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2.4 Specific Gravity
2.63-2.653.80-4.15
1
7.18
2.5 Fracture
Not Available
Uneven, UnevenArthur Thomas, Gemstones (2009)
2.6 Cleavage
Indiscernible
perfect along [010] and [100]
2.7 Mohs Hardness
2.8 Chemical Composition
SiO2
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
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X = very pale blue; Y = pale blue; Z = deep blue
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.54-1.551.752-1.815
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
Not Available0.063
0
0.296
3.9 Clarity
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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