1 Astrology
1.1 Origin
Southern and central Africa
the type locality
1.2 Color
Green, Blue, Yellow, White
Colorless, gray, White
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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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
2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Not Available
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
2.6 Cleavage
{001} Perfect
Perfect on {010}, good on {100}
2.7 Mohs Hardness
2.8 Chemical Composition
Mg 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Be 2BO 3(OH)Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Not Available
NilArthur Thomas
3.3 Dispersion
3.4 Transparency
TranslucentAnthony et al, Handbook of mineralogy (2001)
Transparent
3.5 Refractive Index
1.538-1.5601.543-1.631
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
Not Available
Orthorhombic
3.8 Birefringence
Not Available0.071-0.074
0
0.296
3.9 Clarity
TranslucentAnthony et al
Transparent
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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