Origin
Southern and central Africa
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Color
Brown, Green, gray, White
Brown
Streak
gray, White
Brownish, Red, Black
For which Rashi?
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Planet
-
-
Element of Planets
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-
Energy
-
-
How to Wear?
Finger
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Ring Metal
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-
Deities
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Not to wear with
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Powers
-
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Birthstone
Planetary
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-
Talisman
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Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.15-3.2595.2
1
7.18
👆🏻
Fracture
-
Subconchoidal, Conchoidal
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Good in one direction
Mohs Hardness
5.5-66-6.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
Resinous
Pleochroism
Weak to moderate
-
Dispersion
0.020.03
0.005
1
👆🏻
Transparency
Transparent
TransparentWalter Schumann
Refractive Index
1.625-1.7182.190-2.457
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Orthorhombic
Birefringence
-99990.083
0
0.296
👆🏻
Clarity
Transparent
TransparentWalter Schumann
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
Focus
Strength
Healing
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Emotional healing
Qualities Associated
Protection
Balance