Origin
Brazil
USA, Southern and central Africa
Color
Blue
Yellow, Brown, Reddish, Greenish, Green, gray
Streak
-
Yellow
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
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Ring Metal
-
-
Deities
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-
Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.60-2.905.5
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Indistinct
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
7.5-85-5.5
2
10
👆🏻
Chemical Composition
Be 3Al 2Si 6O 18Ulrich Henn and Claudio C.
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Vitreous
Pleochroism
Strong dichroism: blue to colourless\
-
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent
Translucent
Refractive Index
1.560-1.6041.993-2.02
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
-
Birefringence
0.003-0.010-9999
0
0.296
👆🏻
Clarity
Transparent
Translucent
Physical
Neurological
Enhances mental clarity and focus
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Cardiovascular
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-
Respiratory
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Reproductive
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Digestive
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Psychology
Communication
Confidence
Healing
Emotional healing
Emotional healing
Qualities Associated
Communication
Vitality