White, Colorless, Greenish, White, Colorless, gray, pink, Greenish, White, Greenish, Reddish
Yellow, Brownish, Reddish, Green, Brownish, Yellow, Green, Yellow, Red
Uneven, Subconchoidal, Uneven, Subconchoidal, Conchoidal, Brittle
Uneven
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)