1 Astrology
1.1 Origin
Sri Lanka
Tanzania, Sri Lanka, China
1.2 Color
Green, Red, Blue, Brown, pink
Colorless
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
Not Available
1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
Not Available
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1.9 Deities
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1.10 Not to wear with
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1.11 Powers
Not Available
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1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
Conchoidal
2.6 Cleavage
{0001} Poor
Imperfect/fair/absent
2.7 Mohs Hardness
2.8 Chemical Composition
Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Strong: dark brown light brownAnthony et al
Weak
3.3 Dispersion
3.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
3.5 Refractive Index
Not Available1.70-1.73
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
Not Available0.055
0
0.296
3.9 Clarity
Transparent
Color grading system
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
Not Available
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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
Not Available
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