1 Astrology
1.1 Origin
Madagascar
Mexico, USA, Southern and central Africa
1.2 Color
Brownish, Black, Reddish, Brown, Blue
Greenish, Colorless, White, Brown, Colorless, Yellow, White, Green
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
2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
2.6 Cleavage
{0001} good, {10 1 0} parting
None
2.7 Mohs Hardness
2.8 Chemical Composition
(Ca,Ce)(Al,Ti,Mg)12O19
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
O = brownish gray; E = gray
NilArthur Thomas
3.3 Dispersion
3.4 Transparency
Handbook of mineralogy (2001)
Transparent
3.5 Refractive Index
1.79-1.8071.621-1.675
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
Not Available0.044
0
0.296
3.9 Clarity
Handbook of mineralogy (2001)
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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