Yellow, Brownish, Reddish, Green, Brownish, Yellow, Green, Yellow, Red
Greenish, White, White, gray, Greenish, Reddish, White, gray, Greenish, Green, gray, White, gray, Greenish, Green, gray
Uneven
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
(Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)