1 Astrology
1.2 Origin
Southern and central Africa
Southern and central Africa, Vietnam
1.8 Color
White, Colorless, Blue, Red, Green, Yellow, Violet, pink, Violet
Green, Black, Brown
1.12 Streak
1.16 For which Rashi?
Not Available
Not Available
1.19 Planet
Not Available
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1.21 Element of Planets
Not Available
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1.25 Energy
Not Available
Not Available
1.29 How to Wear?
1.29.1 Finger
Not Available
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1.32.2 Ring Metal
Not Available
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1.35 Deities
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1.36 Not to wear with
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1.37 Powers
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2.2 Birthstone
3.0.1 Planetary
Not Available
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4.3.1 Talisman
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5 Physical Properties
5.2 Tenacity
Not Available
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5.6 Solubility
Not Available
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5.7 Durability
Not Available
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5.8 Specific Gravity
2.27-2.333.04-3.26
1
7.18
5.18 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Splintery, Brittle, Uneven
5.19 Cleavage
Not Available
{110} perfect
5.20 Mohs Hardness
8.4 Chemical Composition
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
9 Optical Properties
9.1 Luster
9.2 Pleochroism
Not Available
Not Available
9.3 Dispersion
9.10 Transparency
Gemmological Tables (2004)
Transparent
9.11 Refractive Index
1.483-1.4871.613-1.663
1
3.25
9.18 Optic Character
Not Available
Not Available
9.19 Crystal System
9.20 Birefringence
Not Available0.020
0
0.296
10.3 Clarity
12 Benefits
12.1 Physical
12.2.1 Neurological
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12.3.1 Cardiovascular
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12.3.3 Respiratory
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12.3.5 Reproductive
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12.4.1 Digestive
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12.6 Psychology
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12.8 Healing
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12.9 Qualities Associated
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