1 Astrology
1.1 Origin
Southern and central Africa
Not Available
1.2 Color
Black, Reddish, gray, Red
Blue, gray, Black, Blue
1.3 Streak
Black, Brown, Reddish, Red
Blue
1.4 For which Rashi?
Aries, Aquarius, Aries, Aquarius, Aries, Aquarius
Not Available
1.5 Planet
1.6 Element of Planets
Not Available
Not Available
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
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
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
2.5 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Conchoidal, Brittle, Conchoidal
2.6 Cleavage
None, may show partings on {0001} and {10 1 1}
Good on [110] and on [001]
2.7 Mohs Hardness
2.8 Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
[ ]Na2(Mg3Al2)Si8O22(OH)2
3 Optical Properties
3.1 Luster
Not Available
Vitreous, Pearly
3.2 Pleochroism
O = brownish red; E = yellowish red
Strong
3.3 Dispersion
3.4 Transparency
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Not Available
3.5 Refractive Index
2.690-3.2201.606-1.637
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.280Not Available
0
0.296
3.9 Clarity
OpaqueHerve Nicolas Lazzarelli
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