Origin
Brazil, Colombia, Southern and central Africa
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Color
Greenish, Blue, Colorless, White, Green
Black, Blue, Yellow, Green
Streak
White
Grey, Greenish, Brown
For which Rashi?
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Planet
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Element of Planets
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Energy
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How to Wear?
Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
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Birthstone
Planetary
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Talisman
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Tenacity
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Brittle
Solubility
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Durability
-
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Specific Gravity
3.08-3.123.28-3.44
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven, Splintery
Cleavage
{010} Perfect
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Mohs Hardness
7.55.0-6.0
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na2Fe2+3Fe3+2Si8O22(OH)2
Luster
Vitreous
Vitreous, Silky
Pleochroism
Weak: colorless-(greenish) yellow
X = blue
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
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Refractive Index
1.650-1.6771.680-1.698
1
3.25
👆🏻
Optic Character
-
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Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
monoclinic
Birefringence
0.019-0.0250.005-0.008
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
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Supports heart health
Respiratory
Good
Good
Reproductive
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Digestive
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Psychology
Harmony
Empowerment
Healing
Emotional healing
Emotional healing
Qualities Associated
Communication
Clear Thinking