1 Astrology
1.1 Origin
Italy, Canada
China, Pakistan
1.4 Color
Blue, Red, Yellow, Colorless, Blue, Colorless, Green, Yellow, White, Blue, Colorless, Green, Yellow, White
Red, Brown, Black, pink, Brownish
1.6 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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1.14.1 Ring Metal
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1.16 Energy
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1.17 Deities
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1.18 Not to wear with
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1.19 Powers
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2.2 Birthstone
2.2.1 Planetary
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2.3.1 Talisman
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3 Physical Properties
3.1 Tenacity
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3.3 Solubility
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3.4 Durability
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3.5 Specific Gravity
2.90-3.103.85-3.94
1
7.18
3.9 Fracture
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven
3.10 Cleavage
Poor/indistinct on {1120} and {1011}
{010} Good, {100} Distinct
3.11 Mohs Hardness
4.4 Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
5 Optical Properties
5.1 Luster
5.2 Pleochroism
Pale green
DistinctArthur Thomas
5.3 Dispersion
5.6 Transparency
5.7 Refractive Index
1.614-1.6661.643-1.703
1
3.25
5.11 Optic Character
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5.12 Crystal System
5.13 Birefringence
6.5 Clarity
7 Benefits
7.1 Physical
7.1.1 Neurological
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7.1.2 Cardiovascular
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7.1.3 Respiratory
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7.1.4 Reproductive
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7.1.5 Digestive
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7.2 Psychology
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7.3 Healing
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7.4 Qualities Associated
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