1 Astrology
1.1 Origin
Canada, USA, Tanzania, Norway
Kenya, Southern and central Africa
1.2 Color
Red, Yellow, Brown, Yellow, Red, pink, Green
Green, Brown, Yellow, Red
1.3 Streak
Not Available
Not Available
1.4 For which Rashi?
1.5 Planet
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
1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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
2.62-2.653.55-3.70
1
7.18
2.5 Fracture
Gemstones of the world (2001)
Gemstones (2009)
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Weak or absentWalter Schumann
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
3.3 Dispersion
3.4 Transparency
Transparent, Translucent, Transparent to translucent
Transparent
3.5 Refractive Index
1.53-1.551.710-1.735
1
3.25
3.6 Optic Character
3.7 Crystal System
3.8 Birefringence
0.007-0.0100.012-0.033
0
0.296
3.9 Clarity
Transparent to translucent
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
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