Yellow, Black
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
ConchoidalGemdat.org, Uneven
Uneven, UnevenArthur Thomas, Gemstones (2009)
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.