1 Astrology
1.1 Origin
USA
Canada, Southern and central Africa
1.2 Color
Colorless, White, Green, White, Green, Brown, Colorless, Green, White, White
Green, Green, Yellow, Red
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
Easily soluble in cold dilute HCl
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Brittle, Uneven, Brittle, Uneven
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
2.6 Cleavage
Good in two directions parallel to the prism faces {110}
{101} Distinct
2.7 Mohs Hardness
2.8 Chemical Composition
CaZn(AsO4)(OH)
ThCa 2Si 8O 20Walter Schumann , Gemstones of the world (2001) More from other references
3 Optical Properties
3.1 Luster
Subadamantine, Silky, Fibrous
Vitreous
3.2 Pleochroism
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3.3 Dispersion
3.4 Transparency
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Transparent
3.5 Refractive Index
3.6 Optic Character
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3.7 Crystal System
Orthorhombic
Tetragonal Trapezohedral H-M Symbol (4 2 2) Space Group: I 422
3.8 Birefringence
3.9 Clarity
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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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