1 Astrology
1.1 Origin
Not Available
Afghanistan, Southern and central Africa
1.2 Color
Grey, Black, gray
Blue, Greenish, Violet
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
Not Available
1.6 Element of Planets
Not Available
Not Available
1.7 Energy
Not Available
Not Available
1.8 How to Wear?
1.8.1 Finger
Not Available
Not Available
1.8.2 Ring Metal
Not Available
Not Available
1.9 Deities
Not Available
Not Available
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Not Available
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
2.2 Solubility
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
5.4 Fracture
Brittle, Metallic
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
5.5 Cleavage
Distinct / Good, Prismatic
Imperfect on {110}
5.6 Mohs Hardness
5.13 Chemical Composition
Ba(Mn++++,Mn++)8O16
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
6 Optical Properties
6.1 Luster
6.2 Pleochroism
6.3 Dispersion
7.2 Transparency
Not Available
Gemmological Tables (2004) More from other references
7.4 Refractive Index
Not Available1.500
1
3.25
9.5 Optic Character
Not Available
Not Available
9.6 Crystal System
9.7 Birefringence
Not AvailableNot Available
0
0.296
9.8 Clarity
Not Available
Gemmological Tables (2004) More from other references
10 Benefits
10.1 Physical
10.1.1 Neurological
Not Available
Not Available
10.1.2 Cardiovascular
Not Available
Not Available
10.1.3 Respiratory
Not Available
Not Available
10.1.4 Reproductive
Not Available
Not Available
10.1.5 Digestive
Not Available
Not Available
10.2 Psychology
Not Available
Not Available
10.3 Healing
Not Available
Not Available
10.4 Qualities Associated
Not Available
Not Available