1 Astrology
1.1 Origin
Southern and central Africa
Not Available, Mexico, Germany
1.2 Color
Black, Brownish, White, Brown
Blue
1.3 Streak
Reddish, Black
Not Available
1.4 For which Rashi?
1.5 Planet
1.6 Element of Planets
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
Not Available
Receptive, Projective
1.9 Deities
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
Not Available
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
4.76-5.03Not Available
1
7.18
2.5 Fracture
Conchoidal, Brittle
Not Available
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Not Available
3 Optical Properties
3.1 Luster
Not Available
Not Available
3.2 Pleochroism
Not Available
Not Available
3.3 Dispersion
3.4 Transparency
Translucent
Not Available
3.5 Refractive Index
Not AvailableNot Available
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
Not Available
Orthorhombic
3.8 Birefringence
Not AvailableNot Available
0
0.296
3.9 Clarity
Translucent
Not Available
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
Not Available
4.1.3 Respiratory
Not Available
Not Available
4.1.4 Reproductive
Not Available
Not Available
4.1.5 Digestive
Not Available
Not Available
4.2 Psychology
Not Available
Not Available
4.3 Healing
Not Available
Not Available
4.4 Qualities Associated
Not Available
Not Available