1 Astrology
1.1 Origin
Southern and central Africa
Southern and central Africa
1.2 Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
Colorless, Brown, Greenish, gray
1.3 Streak
1.4 For which Rashi?
Not Available
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1.5 Planet
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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1.8 Energy
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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
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
3.03-3.182.62-2.67
1
7.18
2.5 Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
2.6 Cleavage
{???} Indistinct
From the Greek, oligos and kasein, little cleavage.
2.7 Mohs Hardness
2.8 Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Very strong: pale yellow colorless
Not Available
3.3 Dispersion
3.4 Transparency
Transparent
Gemmological Tables (2004)
3.5 Refractive Index
1.614-1.6661.538-1.550
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
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3.8 Birefringence
3.9 Clarity
Transparent
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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