Origin
Madagascar
Southern and central Africa
Color
Brownish, Black, Reddish, Brown, Blue
Colorless, Greenish, Green, gray, Yellow
Streak
Reddish, Brown
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
-
-
Durability
-
-
Specific Gravity
3.843.21-3.38
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Irregular/uneven, Uneven
Cleavage
{0001} good, {10 1 0} parting
Perfect on {001}
Mohs Hardness
7.5-86-7
2
10
👆🏻
Chemical Composition
(Ca,Ce)(Al,Ti,Mg)12O19
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
Vitreous
Pleochroism
O = brownish gray; E = gray
StrongArthur Thomas
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.79-1.8071.670-1.734
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Hexagonal
monoclinic
Birefringence
-99990.006-0.011
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Excellent
Good
Reproductive
-
-
Digestive
-
-
Psychology
Empowerment
Empathy
Healing
Emotional healing
Emotional healing
Qualities Associated
Balance
Empathy