1 Astrology
1.1 Origin
USA
Southern and central Africa
1.4 Color
Black, Violet, pink, Reddish, Brown, orange
Brown, Black, Blue
1.6 Streak
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1.8 For which Rashi?
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1.10 Planet
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2.13 Element of Planets
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2.15 Energy
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2.18 How to Wear?
2.18.1 Finger
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2.20.1 Ring Metal
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2.23 Deities
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2.24 Not to wear with
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2.25 Powers
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3.1 Birthstone
3.2.1 Planetary
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3.3.1 Talisman
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4 Physical Properties
4.1 Tenacity
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4.3 Solubility
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4.4 Durability
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4.5 Specific Gravity
4.12 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
4.13 Cleavage
{???} Perfect
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4.14 Mohs Hardness
6.4 Chemical Composition
Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2Ulrich Henn and Claudio C.
7 Optical Properties
7.1 Luster
7.2 Pleochroism
Lavender and pale purple for transparent pink stones.Michael OâDonoghue
Definite: brown reddish-brownWalter Schumann
7.3 Dispersion
7.8 Transparency
Gems
Transparent, Translucent
7.9 Refractive Index
1.720-1.7461.544-1.553
1
3.25
7.16 Optic Character
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9.8 Crystal System
9.9 Birefringence
9.10 Clarity
10 Benefits
10.1 Physical
10.1.1 Neurological
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10.1.2 Cardiovascular
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10.1.3 Respiratory
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10.1.4 Reproductive
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10.1.5 Digestive
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10.2 Psychology
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10.3 Healing
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10.4 Qualities Associated
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