1 Astrology
1.1 Origin
Southern and central Africa
Canada
1.2 Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
Brown, Reddish, Black, Brownish
1.1 Streak
1.1 For which Rashi?
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1.4 Planet
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1.7 Element of Planets
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1.9 Energy
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1.11 How to Wear?
1.12.1 Finger
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1.14.1 Ring Metal
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1.2 Deities
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1.6 Not to wear with
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1.9 Powers
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1.12 Birthstone
1.13.1 Planetary
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1.17.1 Talisman
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2 Physical Properties
2.1 Tenacity
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2.5 Solubility
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3.2 Durability
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4.4 Specific Gravity
3.03-3.183.77-3.93
1
7.18
5.5 Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Gems, Conchoidal, Brittle
5.6 Cleavage
5.7 Mohs Hardness
5.17 Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Ca 3Ti4+2(Fe3+2Si)O 12Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
6 Optical Properties
6.1 Luster
6.2 Pleochroism
Very strong: pale yellow colorless
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7.2 Dispersion
9.7 Transparency
9.8 Refractive Index
1.614-1.6661.94-1.98
1
3.25
9.15 Optic Character
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9.16 Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
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9.19 Birefringence
0.014-0.032Not Available
0
0.296
9.27 Clarity
10 Benefits
10.1 Physical
10.1.1 Neurological
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10.1.2 Cardiovascular
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10.2.1 Respiratory
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10.2.2 Reproductive
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11.1.2 Digestive
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11.2 Psychology
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11.4 Healing
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12.1 Qualities Associated
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