Colorless, Reddish, White, pink, Green, Yellow, Violet, Blue, Brown
Yellow, Brownish, Reddish, White, Colorless, Blue, Green, Violet, pink
Uneven, UnevenArthur Thomas, Gemstones (2009)
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)