1 Astrology
1.1 Origin
Southern and central Africa
Not Available
1.2 Color
Colorless, Greenish, Colorless, Green, gray, Yellow
Green, Grey, Blue, Yellow, Colorless, Violet, Red
1.3 Streak
1.4 For which Rashi?
Not Available
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1.5 Planet
Not Available
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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
Not Available
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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
2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
3.21-3.38Not Available
1
7.18
2.5 Fracture
Irregular/uneven, Uneven
Sub-Conchoidal, Splintery
2.6 Cleavage
Perfect on {001}
{201} Imperfect, {100} Poor, {001} Poor
2.7 Mohs Hardness
2.8 Chemical Composition
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Not Available
3 Optical Properties
3.1 Luster
Vitreous
Sub-Adamantine, Vitreous, Resinous
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Transparent
Not Available
3.5 Refractive Index
1.670-1.734Not Available
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
0.006-0.011Not Available
0
0.296
3.9 Clarity
Transparent
Not Available
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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