1 Astrology
1.1 Origin
1.2 Color
Green, Grey, Blue, Yellow, Colorless, Violet, Red
Blue, Blue, Black
1.3 Streak
Greenish, White
Grey, Black, gray
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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1.8 Energy
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1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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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
2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
Not Available4.6-4.76
1
7.18
2.5 Fracture
Sub-Conchoidal, Splintery
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
2.6 Cleavage
{201} Imperfect, {100} Poor, {001} Poor
Perfect on {0001}
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
3 Optical Properties
3.1 Luster
Sub-Adamantine, Vitreous, Resinous
Resinous
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Not Available
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
3.5 Refractive Index
Not Available1.45-2.62
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
Not AvailableNot Available
0
0.296
3.9 Clarity
Not Available
OpaqueAnthony et al
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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