1 Astrology
1.1 Origin
Southern and central Africa
Madagascar, Southern and central Africa
1.2 Color
Brown, Brown, Green, Green, gray, White
White, Yellow, Blue, Green, Green, gray, Yellow
1.3 Streak
gray, White, gray, White
White
1.4 For which Rashi?
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1.5 Planet
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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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
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
3.15-3.2592.55-2.63
1
7.18
2.5 Fracture
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Uneven, Uneven, Gems
2.6 Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
{001} Perfect, {010} Good
2.7 Mohs Hardness
2.8 Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
3 Optical Properties
3.1 Luster
Fibrous, Vitreous
Vitreous
3.2 Pleochroism
Weak to moderate
WeakMichael OâDonoghue
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.625-1.7181.514-1.539
1
3.25
3.6 Optic Character
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3.7 Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: C1
3.8 Birefringence
Not Available0.008-0.010
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
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