Origin
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Brazil, Colombia, Southern and central Africa
Color
Brown, Blue, Green, Yellow, White
Greenish, Blue, Colorless, White, Green
Streak
White
White
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
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-
How to Wear?
Finger
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-
Ring Metal
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-
Deities
-
-
Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.32-3.433.08-3.12
1
7.18
👆🏻
Fracture
Conchoidal
ConchoidalWalter Schumann
Cleavage
Poor on {110} and {100} very poor on {001}
{010} Perfect
Mohs Hardness
6-77.5
2
10
👆🏻
Chemical Composition
Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Resinous
Vitreous
Pleochroism
slight in colored varieties
Weak: colorless-(greenish) yellow
Dispersion
0.030.02
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.703-1.7521.650-1.677
1
3.25
👆🏻
Optic Character
-
-
Crystal System
tetragonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Birefringence
0.004-0.0060.019-0.025
0
0.296
👆🏻
Clarity
-
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
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Respiratory
Good
Good
Reproductive
-
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Digestive
-
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Psychology
Transformation
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Communication