Origin
Brazil
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Color
Blue, Green, Colorless, White
Green, Brown, Colorless, Greenish, Yellow
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
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Energy
Not Available
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Deities
Not Available
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Not to wear with
Not Available
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.81
3.25-3.45
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
{001} Perfect
Good on {110}
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Pleochroism
Not Available
X = colorless to green; Y = colorless
Transparency
Transparent
Gemmological Tables (2004) More from other references
Refractive Index
1.590-1.599
1.660-1.685
Optic Character
Not Available
Not Available
Crystal System
Not Available
Orthorhombic
Birefringence
0.009
0.012-0.017
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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