Origin
Southern and central Africa
Linares, Jaén, Andalusia, Spain
Color
Brown, Green, gray, White
Blue
Streak
gray, White
Blue
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.15-3.2595.35
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Perfect on {100}, imperfect on {001}
Mohs Hardness
5.5-62.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Sub-Adamantine, Vitreous
Pleochroism
Weak to moderate
X = pale blue; Y = blue; Z = Prussian blue
Dispersion
0.020.05
0.005
1
👆🏻
Transparency
Transparent
Transparent
Refractive Index
1.625-1.7181.809-1.859
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
monoclinic
Birefringence
-99990.050
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
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Cardiovascular
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-
Respiratory
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Good
Reproductive
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-
Digestive
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Supports digestive health
Psychology
Focus
Self-Expression
Healing
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Emotional healing
Qualities Associated
Protection
Communication