1 Astrology
1.1 Origin
Southern and central Africa, Sixth Edition (2006)
USA
1.2 Color
Blue, Green, Blue, Brown
Yellow, White, Brown, Red
1.3 Streak
1.4 For which Rashi?
1.5 Planet
1.6 Element of Planets
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
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1.8 Energy
1.9 Deities
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
2.2 Solubility
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
Cu2H2Si2O5(OH)4
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Vitreous
3.2 Pleochroism
AbsentWalter Schumann
Pale yellow very pale yellow colorlessAnthony et al
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.460-1.5701.563-1.593
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.023-0.050Not Available
0
0.296
3.9 Clarity
Gemmological Tables (2004) More from other references
Transparent
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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