1 Astrology
1.1 Origin
Madagascar, Sri Lanka
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
1.3 Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Colorless, gray, Yellow, White
1.5 Streak
1.3 For which Rashi?
Not Available
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1.4 Planet
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1.6 Element of Planets
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1.2 Energy
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1.5 How to Wear?
1.6.1 Finger
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1.9.1 Ring Metal
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1.12 Deities
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1.15 Not to wear with
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1.18 Powers
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1.20 Birthstone
2.0.1 Planetary
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2.6.2 Talisman
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3 Physical Properties
3.1 Tenacity
3.5 Solubility
3.8 Durability
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1.2 Specific Gravity
3.8 Fracture
Not Available
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
3.9 Cleavage
Not Available
Perfect on {001}, poor on {201} with 38.5° angle between the two
3.10 Mohs Hardness
4.4 Chemical Composition
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
5 Optical Properties
5.1 Luster
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Vitreous, Pearly
5.2 Pleochroism
Not Available
AbsentWalter Schumann
5.3 Dispersion
8.5 Transparency
Gemmological Tables (2004)
Gemmological Tables (2004) More from other references
8.7 Refractive Index
8.13 Optic Character
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8.15 Crystal System
8.19 Birefringence
Not Available0.012-0.016
0
0.296
8.30 Clarity
Gemmological Tables (2004)
TransparentUlrich Henn and Claudio C. Milisenda
10 Benefits
10.1 Physical
10.1.1 Neurological
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10.1.3 Cardiovascular
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10.1.5 Respiratory
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10.1.7 Reproductive
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10.2.1 Digestive
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10.4 Psychology
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10.6 Healing
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10.7 Qualities Associated
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