Astrology
Origin
Sri Lanka
Southern and central Africa
Color
Green, Red, Blue, Brown, pink
Blue, Grey
Streak
White
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For which Rashi?
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Planet
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Element of Planets
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Energy
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How to Wear?
Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
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Birthstone
Planetary
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Talisman
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Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
3.02
2.58-2.64
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
Gemstones of the world (2001)
Cleavage
{0001} Poor
Not Available
Mohs Hardness
Not Available
7
Chemical Composition
Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
SiO 2Walter Schumann , Gemstones of the world (2001)
Optical Properties
Luster
Vitreous
Not Available
Pleochroism
Strong: dark brown light brownAnthony et al
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Dispersion
Not Available
None
Transparency
Transparent
Gemstones of the world (2001)
Refractive Index
Not Available
1.534-1.540
Optic Character
Not Available
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Crystal System
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Birefringence
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Clarity
Transparent
Gemstones of the world (2001)
Benefits
Physical
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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