1 Astrology
1.1 Origin
1.3 Color
Not Available
Blue, Green, Greenish, Black
1.5 Streak
1.7 For which Rashi?
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1.9 Planet
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1.11 Element of Planets
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1.13 How to Wear?
1.13.1 Finger
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1.13.3 Ring Metal
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1.15 Energy
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1.17 Deities
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1.19 Not to wear with
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1.21 Powers
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1.23 Birthstone
1.23.1 Planetary
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1.23.3 Talisman
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2 Physical Properties
2.1 Tenacity
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
3.29-3.334.00-4.62
1
7.18
2.5 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Conchoidal, Uneven
2.6 Cleavage
Not Available
Indistinct parting on [111]
2.7 Mohs Hardness
2.8 Chemical Composition
(Ca,Ce) 4 Na(Na,Ca) 2 Ti(Si 2 O 7 ) 2 F 2 (O,F) 2 Michael O’Donoghue, Gems, Sixth Edition (2006)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Not Available
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3.3 Dispersion
3.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
3.5 Refractive Index
1.653-1.6621.790-1.818
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
Not AvailableNot Available
0
0.296
3.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda
4 Benefits
4.1 Physical
4.1.1 Neurological
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4.1.2 Cardiovascular
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4.1.3 Respiratory
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4.1.4 Reproductive
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4.1.5 Digestive
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4.2 Psychology
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4.3 Healing
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4.4 Qualities Associated
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