1 Astrology
1.1 Origin
Southern and central Africa
Sri Lanka
1.2 Color
Blue, Green, Colorless
Red, Blue, Green, Brown, Black
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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1.8 Energy
Not Available
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1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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1.12 Birthstone
1.12.1 Planetary
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1.12.2 Talisman
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
(e.g. graphite).
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
2.6 Cleavage
2.7 Mohs Hardness
2.11 Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
3 Optical Properties
3.1 Luster
Vitreous, Pearly
Vitreous
4.3 Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
Absent
4.5 Dispersion
4.8 Transparency
Transparent
Transparent, Translucent
4.9 Refractive Index
1.560-1.6401.770-1.780
1
3.25
4.13 Optic Character
Not Available
Not Available
4.14 Crystal System
4.15 Birefringence
0.054-0.075Not Available
0
0.296
5.5 Clarity
6 Benefits
6.1 Physical
6.1.1 Neurological
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6.1.2 Cardiovascular
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6.1.3 Respiratory
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6.1.4 Reproductive
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6.1.5 Digestive
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6.2 Psychology
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6.3 Healing
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6.4 Qualities Associated
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