1 Astrology
1.1 Origin
Southern and central Africa
Brazil, Southern and central Africa
1.2 Color
Yellow, Red, Brown
Blue, Green, Black
1.3 Streak
1.4 For which Rashi?
Pisces, Cancer, Pisces, Cancer
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
1.5 Planet
1.6 Element of Planets
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
1.9 Deities
1.10 Not to wear with
Not Available
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1.11 Powers
1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.65-2.873.04-3.17
1
7.18
2.5 Fracture
Not Available
Uneven, Uneven, Gemstones of the world (2001) More from other references
2.6 Cleavage
Not Available
{001} Indistinct, {???} Indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
3 Optical Properties
3.1 Luster
Not Available
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3.2 Pleochroism
Not Available
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004)
Transparent, Translucent
3.5 Refractive Index
1.53-1.691.604-1.646
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
3.9 Clarity
Gemmological Tables (2004)
Transparent
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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