Origin
Southern and central Africa
Southern and central Africa
Color
Violet, Black
Violet, Brownish, Black, pink, Red, Reddish
Streak
gray, White
Red
For which Rashi?
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-
Planet
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-
Element of Planets
-
-
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
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.173.2-3.4
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
None
[100] [001] perfect
Mohs Hardness
74-4.5
2
10
👆🏻
Chemical Composition
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
-
Pleochroism
Strong: pale lavender dark blueAnthony et al
StrongArthur Thomas
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
TranslucentAnthony et al, Translucent
TranslucentWalter Schumann
Refractive Index
-99991.85-1.92
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Orthorhombic
Birefringence
-99990.070
0
0.296
👆🏻
Clarity
TranslucentAnthony et al
TranslucentWalter Schumann
Physical
Neurological
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Cardiovascular
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Respiratory
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Good
Reproductive
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Digestive
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Psychology
Empowerment
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Healing
Emotional healing
Emotional healing
Qualities Associated
Emotional Healing
Spiritual Awareness