Origin
Southern and central Africa
Canada, Southern and central Africa, Italy, Australia, India
Color
Black, Brownish, Brown
Violet, Brownish, Yellow, Reddish, Pale pink
Streak
Brown
White
For which Rashi?
-
Virgo
Planet
-
Mercury, Jupiter
Element of Planets
-
Water
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.5-4.82.69-2.79
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
None, parting may develop along {111}
Poor on {0001}
Mohs Hardness
5.55.5-6.5
2
10
👆🏻
Chemical Composition
Fe++Cr2O4
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Vitreous
Pleochroism
none.
Weak
Dispersion
0.040.02
0.005
1
👆🏻
Transparency
-
Translucent
Refractive Index
2.08-2.161.607-1.612
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Hexagonal
Birefringence
-99990.003
0
0.296
👆🏻
Clarity
-
Translucent
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
Poor
Excellent
Reproductive
-
-
Digestive
-
-
Psychology
Vitality
Spirituality
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Spiritual Protection