Colorless, Reddish, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet, White, Colorless, Blue, Green, Brown, Yellow, pink, Violet, White, pink, Green, Yellow, Violet
White, Colorless, gray, Yellow
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references