White, White, Greenish, White, Greenish, White, Greenish
Blue, Green, Colorless, White
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
NaCa2Si4O10F
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references