Origin
Southern and central Africa
Southern and central Africa
Color
Colorless, Brown, Greenish, gray
Violet, Black
Streak
White
gray, White
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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Solubility
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Durability
-
-
Specific Gravity
2.62-2.673.17
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
From the Greek, oligos and kasein, little cleavage.
None
Mohs Hardness
6-6.57
2
10
👆🏻
Chemical Composition
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Vitreous
Pleochroism
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Strong: pale lavender dark blueAnthony et al
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
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TranslucentAnthony et al, Translucent
Refractive Index
1.538-1.550-9999
1
3.25
👆🏻
Optic Character
-
-
Crystal System
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Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.010-9999
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TranslucentAnthony et al
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
Harmony
Empowerment
Healing
Emotional healing
Emotional healing
Qualities Associated
Harmony
Emotional Healing