Astrology
Origin
Brazil
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Color
Blue, Green, Colorless, White
Green, Brown, Colorless, Greenish, Yellow
Streak
White
White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
How to Wear?
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Birthstone
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
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}
Mohs Hardness
4.5-5
6.5
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
Optical Properties
Luster
Vitreous
Vitreous
Pleochroism
Not Available
X = colorless to green; Y = colorless
Dispersion
Not Available
0.02
21
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
Benefits
Physical
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
