Origin
USA
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Color
Brown, Red, Black, Brownish
Green, Brown, Colorless, Greenish, Yellow
Streak
Reddish, Brown
White
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.05-5.223.25-3.45
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven
Cleavage
None
Good on {110}
Mohs Hardness
5.5-66.5
2
10
👆🏻
Chemical Composition
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Luster
-
Vitreous
Pleochroism
-
X = colorless to green; Y = colorless
Dispersion
0.190.02
0.005
1
👆🏻
Transparency
Translucent
-
Refractive Index
-99991.660-1.685
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
Orthorhombic
Birefringence
-99990.012-0.017
0
0.296
👆🏻
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
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-
Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
Creativity
Harmony
Healing
-
Emotional healing
Qualities Associated
Grounding
Self-worth