1 Astrology
1.1 Origin
Brazil, Southern and central Africa
USA
1.2 Color
Blue, Green, Black
White, Brown, pink
1.3 Streak
1.4 For which Rashi?
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
Not Available
1.5 Planet
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
1.9 Deities
1.10 Not to wear with
Not Available
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1.11 Powers
Not Available
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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
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2.3 Durability
Not Available
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2.4 Specific Gravity
3.04-3.173.396-3.443
1
7.18
2.5 Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
Brittle, Metallic
2.6 Cleavage
{001} Indistinct, {???} Indistinct
[001] good, [100] and [110] fair
2.7 Mohs Hardness
2.8 Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
3 Optical Properties
3.1 Luster
Not Available
Vitreous, Resinous, Greasy
3.2 Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Not Available
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Handbook of mineralogy (2001)
3.5 Refractive Index
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.031-0.036Not Available
0
0.296
3.9 Clarity
Transparent
Handbook of mineralogy (2001)
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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