Astrology
Origin
Not Available
Madagascar
Color
Yellow, Violet, Green, Brown, White, gray, Greenish
Brownish, Black, Reddish, Brown, Blue
Streak
White
Reddish, Brown
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
How to Wear?
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Birthstone
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Physical Properties
Tenacity
Elastic
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.9-3.1
3.84
Fracture
Uneven
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Perfect basal {001}
{0001} good, {10 1 0} parting
Mohs Hardness
3.5-4.0
7.5-8
Chemical Composition
Not Available
(Ca,Ce)(Al,Ti,Mg)12O19
Optical Properties
Luster
Pearly, Vitreous
Vitreous
Pleochroism
Distinct
O = brownish gray; E = gray
Dispersion
Not Available
Not Available
Transparency
Not Available
Handbook of mineralogy (2001)
Refractive Index
1.565-1.625
1.79-1.807
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Hexagonal
Birefringence
0.040-0.050
Not Available
Clarity
Not Available
Handbook of mineralogy (2001)
Benefits
Physical
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
