Origin
Sri Lanka
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Color
Blue
Black, Blue, Yellow, Green
Streak
-
Grey, Greenish, Brown
For which Rashi?
Sagittarius, Scorpio
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Planet
Pluto
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Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Hephaestus
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Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.65-4.553.28-3.44
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Splintery
Cleavage
None, but may exhibit slight parting
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Mohs Hardness
7.5-85.0-6.0
2
10
👆🏻
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Na2Fe2+3Fe3+2Si8O22(OH)2
Luster
Vitreous
Vitreous, Silky
Pleochroism
-
X = blue
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.735-1.7901.680-1.698
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
monoclinic
Birefringence
-99990.005-0.008
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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Physical
Neurological
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Enhances mental clarity and focus
Cardiovascular
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Supports heart health
Respiratory
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Good
Reproductive
-
-
Digestive
-
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Psychology
Empowerment
Empowerment
Healing
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Emotional healing
Qualities Associated
Transformation
Clear Thinking