Colorless, Colorless, Green, gray, pink, Yellow, Colorless, Green, gray, pink, Yellow
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
Uneven, Uneven, Gems, Sixth Edition (2006)
Uneven, UnevenArthur Thomas, Gemstones (2009)
(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.