Colorless, White, Yellow, Green, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet
Greenish, White, White, gray, Greenish, Reddish, White, gray, Greenish, Green, gray, White, gray, Greenish, Green, gray
Uneven, Brittle, Uneven, Brittle, Uneven
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
Perfect on {001}, imperfect on {110}
Perfect on {001}, very good on {010}, imperfect on {110}
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)