1 Astrology
1.1 Origin
Brazil, Southern and central Africa
Australia
1.2 Color
1.3 Streak
1.4 For which Rashi?
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
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1.5 Planet
1.6 Element of Planets
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1.7 Energy
1.8 How to Wear?
1.8.1 Finger
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1.8.2 Ring Metal
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1.9 Deities
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
3.04-3.172.34-2.51
1
7.18
2.8 Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
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2.9 Cleavage
{001} Indistinct, {???} Indistinct
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2.10 Mohs Hardness
5.4 Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
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6 Optical Properties
6.1 Luster
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6.2 Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
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6.3 Dispersion
7.16 Transparency
Transparent, Translucent
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7.17 Refractive Index
1.604-1.6461.490-1.520
1
3.25
8.5 Optic Character
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8.6 Crystal System
8.7 Birefringence
0.031-0.036Not Available
0
0.296
10.7 Clarity
Transparent
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11 Benefits
11.1 Physical
11.1.1 Neurological
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11.1.2 Cardiovascular
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11.1.3 Respiratory
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11.1.4 Reproductive
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11.1.5 Digestive
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11.2 Psychology
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11.3 Healing
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11.4 Qualities Associated
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