Origin
Italy, China
Sri Lanka
Color
Colorless, White, Blue, gray
Blue
Streak
White
-
For which Rashi?
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Sagittarius, Scorpio
Planet
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Pluto
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
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Hephaestus
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
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Solubility
-
-
Durability
-
-
Specific Gravity
3.093.65-4.55
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
Perfect on {100} and {010}, imperfect on {101}
None, but may exhibit slight parting
Mohs Hardness
87.5-8
2
10
👆🏻
Chemical Composition
CaAl2Si2O7(OH)2.H2O
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Luster
Vitreous, Greasy
Vitreous
Pleochroism
Weak
-
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.672-1.6761.735-1.790
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Isometric
Birefringence
0.019-0.021-9999
0
0.296
👆🏻
Clarity
-
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
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-
Cardiovascular
-
-
Respiratory
Good
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Reproductive
-
-
Digestive
-
-
Psychology
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Empowerment
Healing
Emotional healing
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Qualities Associated
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Transformation