Origin
Southern and central Africa
Mexico
Color
Violet, Black
Colorless, White, Greenish, Brown
Streak
gray, White
White
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Flexible
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.172.20-2.40
1
7.18
👆🏻
Fracture
-
Conchoidal, Splintery, Fibrous
Cleavage
None
Perfect on {010}, distinct on {100}
Mohs Hardness
72
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)
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Luster
Vitreous
Vitreous, Silky, Pearly, Waxy
Pleochroism
Strong: pale lavender dark blueAnthony et al
None
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
TranslucentAnthony et al, Translucent
Transparent, Translucent
Refractive Index
-99991.521-1.531
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
monoclinic
Birefringence
-99990.010
0
0.296
👆🏻
Clarity
TranslucentAnthony et al
Transparent
Physical
Neurological
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-
Cardiovascular
-
-
Respiratory
-
Good
Reproductive
-
-
Digestive
-
-
Psychology
Empowerment
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Emotional Healing
Harmony