Origin
Southern and central Africa
Mexico
Color
Violet, Black
Colorless, Violet, White
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
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.172.70
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
None
Perfect on {100}
Mohs Hardness
74.5
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)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
Luster
Vitreous
Vitreous
Pleochroism
Strong: pale lavender dark blueAnthony et al
-
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
TranslucentAnthony et al, Translucent
Transparent, Translucent
Refractive Index
-99991.461-1.485
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
monoclinic
Birefringence
-99990.024
0
0.296
👆🏻
Clarity
TranslucentAnthony et al
Transparent
Physical
Neurological
-
-
Cardiovascular
-
Supports heart health
Respiratory
-
Good
Reproductive
-
-
Digestive
-
3.6g
Psychology
Empowerment
Spiritual growth
Healing
Emotional healing
Emotional healing
Qualities Associated
Emotional Healing
Spiritual Connection