1 Astrology
1.2 Origin
USA
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
1.4 Color
Red, Brown, Brown, Red, Yellow, pink
Green, Brown, Colorless, Greenish, Yellow
1.6 Streak
1.8 For which Rashi?
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1.10 Planet
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1.11 Element of Planets
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1.13 How to Wear?
1.13.1 Finger
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1.14.1 Ring Metal
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1.16 Energy
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1.18 Deities
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1.20 Not to wear with
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1.21 Powers
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1.22 Birthstone
1.22.1 Planetary
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2.1.1 Talisman
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3 Physical Properties
3.1 Tenacity
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3.3 Solubility
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3.5 Durability
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3.6 Specific Gravity
3.06-3.193.25-3.45
1
7.18
3.8 Fracture
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
3.10 Cleavage
{010} Perfect
Good on {110}
3.12 Mohs Hardness
3.14 Chemical Composition
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
5 Optical Properties
5.2 Luster
5.3 Pleochroism
NilArthur Thomas
X = colorless to green; Y = colorless
5.5 Dispersion
5.8 Transparency
Translucent
Gemmological Tables (2004) More from other references
5.9 Refractive Index
1.627-1.6631.660-1.685
1
3.25
5.11 Optic Character
Not Available
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5.13 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Orthorhombic
5.15 Birefringence
0.032-0.0350.012-0.017
0
0.296
5.17 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
7 Benefits
7.1 Physical
7.1.1 Neurological
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7.1.3 Cardiovascular
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7.1.5 Respiratory
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7.1.7 Reproductive
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7.2.1 Digestive
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7.4 Psychology
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7.6 Healing
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7.7 Qualities Associated
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