1 Astrology
1.1 Origin
Southern and central Africa
Italy
1.2 Color
Blue, Grey
Yellow, orange, Red
1.3 Streak
Not Available
Not Available
1.4 For which Rashi?
Not Available
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1.5 Planet
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1.6 Element of Planets
Not Available
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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
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2.2 Solubility
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.58-2.643.355-3.433
1
7.18
1.5 Fracture
Gemstones of the world (2001)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
1.6 Cleavage
Not Available
{???} Good, {???} Good
1.7 Mohs Hardness
1.8 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
(Ca,Mn2+ ,Fe2+ ) 3Al 2BSi 4O 15(OH)Anthony et al , Handbook of mineralogy (2001)
2 Optical Properties
2.1 Luster
2.2 Pleochroism
Not Available
In thick sections
2.3 Dispersion
2.4 Transparency
Gemstones of the world (2001)
Transparent
2.5 Refractive Index
1.534-1.5401.690-1.705
1
3.25
2.6 Optic Character
Not Available
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2.7 Crystal System
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2.8 Birefringence
Not AvailableNot Available
0
0.296
2.9 Clarity
Gemstones of the world (2001)
Transparent
3 Benefits
3.1 Physical
3.1.1 Neurological
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3.1.2 Cardiovascular
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3.1.3 Respiratory
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3.1.4 Reproductive
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3.1.5 Digestive
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3.2 Psychology
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3.3 Healing
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3.4 Qualities Associated
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