1 Astrology
1.1 Origin
1.2 Color
Brown, Brown, Reddish, Brownish, Yellow, Brown, Reddish, Brownish, Yellow
Blue
1.3 Streak
Brown, Brownish, Yellow
Not Available
1.4 For which Rashi?
Not Available
Sagittarius, Scorpio
1.5 Planet
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
1.9 Deities
1.10 Not to wear with
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1.11 Powers
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
Not Available
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2.2 Solubility
HCl soluble
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2.3 Durability
Not Available
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2.4 Specific Gravity
4.27-4.293.65-4.55
1
7.18
2.5 Fracture
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
ConchoidalArthur Thomas, Gemstones (2009)
2.6 Cleavage
Perfect {010}
None, but may exhibit slight parting
2.7 Mohs Hardness
2.8 Chemical Composition
FeO(OH)Arthur Thomas , Gemstones (2009)
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
VisibleArthur Thomas
AbsentWalter Schumann
3.3 Dispersion
3.4 Transparency
Gemstones (2009)
Gemmological Tables (2004)
3.5 Refractive Index
2.26-2.3981.735-1.790
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.138Not Available
0
0.296
3.9 Clarity
Gemstones (2009)
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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