White, Green, Blue, Yellow, Brownish, Red, Blue, gray, Yellow, White
Colorless, White, Yellow, Green, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet
Irregular
Uneven, Brittle, Uneven, Brittle, Uneven
Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(K,Na)Ca4Si8O20(F,OH)•8(H2O)