Origin
Southern and central Africa
Canada, Pakistan
Color
Brown, Green, gray, White
Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, gray, orange
Streak
gray, White
White
For which Rashi?
-
Virgo, Capricorn
Planet
-
-
Element of Planets
-
Earth
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
Protection
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
3.15-3.2592.93-2.96
1
7.18
👆🏻
Fracture
-
Subconchoidal, Conchoidal
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
5.5-63.5-4
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Resinous
Pleochroism
Weak to moderate
StrongArthur Thomas
Dispersion
0.020.17
0.005
1
👆🏻
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.625-1.7181.525-1.686
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Orthorhombic
Birefringence
-99990.155
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
-
Promotes focus and concentration
Cardiovascular
-
Supports heart health
Respiratory
-
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Focus
Stability
Healing
-
Emotional healing
Qualities Associated
Protection
Centering