1 Astrology
1.1 Origin
1.2 Color
Black, Blue, Yellow, Green
Yellow, Brown, Black, Colorless, White, Brownish
1.3 Streak
Grey, Greenish, Brown
White
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
Effervesces in hot HCl
2.3 Durability
Not Available
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2.4 Specific Gravity
3.28-3.442.92-3.12
1
7.18
2.5 Fracture
Uneven, Splintery, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
2.6 Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
[10 1 1] perfect
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
X = blue
NilArthur Thomas
3.3 Dispersion
3.4 Transparency
Not Available
Translucent
3.5 Refractive Index
1.680-1.6981.509-1.720
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
3.9 Clarity
Not Available
Translucent
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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