Origin
Southern and central Africa
Russia
Color
Brown, Green, gray, White
Colorless, Brownish
Streak
gray, White
White
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
Nearly insoluble in HCl and HNO3
Durability
-
-
Specific Gravity
3.15-3.2592.97
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Distinct on {010}
Mohs Hardness
5.5-66
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
-
Luster
Vitreous
Greasy, Vitreous, Pearly
Pleochroism
Weak to moderate
(x): colorless. (y): colorless. (z): colorless.
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent
-
Refractive Index
1.625-1.7181.607
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
monoclinic
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
-
-
Reproductive
-
-
Digestive
-
-
Psychology
Focus
-
Healing
-
Physical healing
Qualities Associated
Protection
Protection