1 Astrology
1.1 Origin
Brazil, Kenya, Madagascar, Southern and central Africa
Southern and central Africa
1.2 Color
Brown, Black
Green, Grey, Green, White
1.3 Streak
1.4 For which Rashi?
Capricorn, Sagittarius
Not Available
1.5 Planet
1.6 Element of Planets
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
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
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven
2.6 Cleavage
{0110} Indistinct
{001} Perfect
2.7 Mohs Hardness
2.8 Chemical Composition
SiO2
(Mg,Fe2+ ) 5Al(Si 3Al)O 10(OH) 8Anthony et al , Handbook of mineralogy (2001)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
None
Distinct: light yellow-green to light bluE
3.3 Dispersion
3.4 Transparency
Transparent, Translucent, Transparent to translucent
Transparent
3.5 Refractive Index
1.544-1.5531.571-1.597
1
3.25
3.6 Optic Character
3.7 Crystal System
Hexagonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
3.8 Birefringence
0.009Not Available
0
0.296
3.9 Clarity
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
Not Available
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