Astrology
Origin
Not Available
Southern and central Africa
Color
Blue, Green
Greenish, Blue, Colorless, Green, Yellow
Streak
Blue
Greenish, gray
For which Rashi?
Not Available
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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
Not Available
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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
Not Available
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Solubility
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Durability
Not Available
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Specific Gravity
3.80-4.15
3.17-3.24
Fracture
Uneven
Conchoidal
Cleavage
perfect along [010] and [100]
(0001) indistinct
Mohs Hardness
3.5-4
9-9.5
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiCArthur Thomas , Gemstones (2009)
Optical Properties
Luster
Silky
Adamantine
Pleochroism
X = very pale blue; Y = pale blue; Z = deep blue
Not Available
Dispersion
Not Available
0.10
5
Transparency
Translucent
Not Available
Refractive Index
1.752-1.815
2.648-2.691
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
6H polytype
Birefringence
0.063
0.043
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
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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