Origin
Madagascar
Southern and central Africa
Color
Brownish, Black, Reddish, Brown, Blue
Brown, Green, gray, White
Streak
Reddish, Brown
gray, 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
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.843.15-3.259
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
{0001} good, {10 1 0} parting
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
7.5-85.5-6
2
10
👆🏻
Chemical Composition
(Ca,Ce)(Al,Ti,Mg)12O19
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Vitreous
Pleochroism
O = brownish gray; E = gray
Weak to moderate
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.79-1.8071.625-1.718
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Hexagonal
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Excellent
-
Reproductive
-
-
Digestive
-
-
Psychology
Empowerment
Focus
Healing
Emotional healing
-
Qualities Associated
Balance
Protection