1 Astrology
1.1 Origin
1.2 Color
Colorless, White, Yellow, White, Greenish, gray, Brown, Colorless, Yellow
Yellow, pink
1.3 Streak
1.4 For which Rashi?
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1.5 Planet
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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1.8 Energy
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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
Very brittle
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2.2 Solubility
2.3 Durability
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2.4 Specific Gravity
3.30-3.403.05-3.08
1
7.18
2.5 Fracture
Conchoidal, Brittle, Conchoidal
Subconchoidal, Uneven, Conchoidal, Uneven
2.6 Cleavage
{010} perfect, {110} distinct, {100} in traces
Poor on {100}
2.7 Mohs Hardness
2.8 Chemical Composition
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
Pearly
Vitreous, Resinous
3.2 Pleochroism
Strong
Visible: X = yellow; Y = pink; Z = pale pink to colorless
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.702-1.7501.639-1.672
1
3.25
3.6 Optic Character
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3.7 Crystal System
Orthorhombic
Orthorhombic
3.8 Birefringence
3.9 Clarity
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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