1 Astrology
1.1 Origin
Czech
Southern and central Africa
1.2 Color
Brownish, Black, Colorless, White, gray, Blue, Green
Green, Blue, Yellow, Red
1.3 Streak
1.4 For which Rashi?
Not Available
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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
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
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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
2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Not Available
2.6 Cleavage
Good [110] and [021]
Not Available
2.7 Mohs Hardness
2.8 Chemical Composition
PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Y 3Al 5O 12Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
Adamantine, Vitreous, Resinous
Not Available
3.2 Pleochroism
AbsentWalter Schumann
Not Available
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Gemmological Tables (2004)
3.5 Refractive Index
3.6 Optic Character
Not Available
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3.7 Crystal System
Orthorhombic
Not Available
3.8 Birefringence
0.273Not Available
0
0.296
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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