Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, Burma, Color: green, greenish yellow, blue, violet, Hardness: 5, Refractive index: 1.60 1.67, Density: 3.17 3.35, Chemical composition: Phosphate composition, Crystal structure: hexagonal, Lustre: vitreous, Origins: Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, brown, green, Yellow, violet, brown, green, Yellow, violet
brown, green, brown, green
Yellow, Green, Blue, Blue, Green, White, Yellow, Green, Red, Blue, Green, Colorless, Yellow, Blue, Violet, pink, Brown
Brown
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Uneven
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Not Available