1 Astrology
1.1 Origin
Mexico, USA, Spain
Russia
1.2 Color
Green, Brown, Yellow, Red, Black
Red, Reddish, Brown, Black, Brown, Reddish, orange
1.3 Streak
1.4 For which Rashi?
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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
3.95-4.103.87-4.14
1
7.18
2.5 Fracture
UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
2.6 Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
Poor on {120}, in traces on {001}
2.7 Mohs Hardness
2.8 Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
AbsentWalter Schumann
Very weak
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
3.5 Refractive Index
2.368-2.3712.583-2.741
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
Not Available0.117
0
0.296
3.9 Clarity
Transparent
Gemmological Tables (2004) More from other references
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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