1 Astrology
1.1 Origin
Brazil, Colombia, Southern and central Africa
the type locality
1.2 Color
Greenish, Blue, Colorless, White, Green
Blue, Green
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
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
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
3.08-3.123.80-4.15
1
7.18
2.5 Fracture
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle, Metallic
Uneven, UnevenArthur Thomas, Gemstones (2009)
2.6 Cleavage
{010} Perfect
perfect along [010] and [100]
2.7 Mohs Hardness
2.8 Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Weak: colorless-(greenish) yellow
X = very pale blue; Y = pale blue; Z = deep blue
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
3.5 Refractive Index
1.650-1.6771.752-1.815
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Orthorhombic
3.8 Birefringence
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
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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