Green, Yellow, Colorless, Grey, Brown, White, Red
White, Colorless, Blue, Red, Green, Yellow, Violet
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
Not Available
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)