Astrology
Origin
Brazil
Kenya, Southern and central Africa
Color
Blue, Green, Colorless, White
Green, Brown, Yellow, Red
Streak
White
Not Available
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
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How to Wear?
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
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Deities
Not Available
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Not to wear with
Not Available
Not Available
Powers
Not Available
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Birthstone
Planetary
Not Available
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Talisman
Not Available
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Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.81
3.55-3.70
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Gemstones (2009)
Cleavage
{001} Perfect
Not Available
Mohs Hardness
4.5-5
4-7
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
Optical Properties
Luster
Vitreous
Vitreous
Pleochroism
Not Available
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
Dispersion
Not Available
0.02
18
Transparency
Transparent
Transparent
Refractive Index
1.590-1.599
1.710-1.735
Optic Character
Not Available
Biaxial/+
Crystal System
Not Available
Not Available
Birefringence
0.009
0.012-0.033
Clarity
Transparent
Transparent
Benefits
Physical
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
Not Available
