Origin
Southern and central Africa
Southern and central Africa, Vietnam
Color
Blue
Green, Black, Brown
Streak
Not Available
White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
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
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.13-3.26
3.04-3.26
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Splintery, Brittle, Uneven
Cleavage
Not Available
{110} perfect
Mohs Hardness
Not Available
5-6
Chemical Composition
Ca 5(F,Cl)(PO 4) 3Arthur Thomas , Gemstones (2009)
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Not Available
Vitreous
Pleochroism
Not Available
Not Available
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004)
Transparent
Refractive Index
1.628-1.651
1.613-1.663
Optic Character
Not Available
Not Available
Crystal System
Not Available
monoclinic
Birefringence
0.002-0.008
0.020
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
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