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
Violet, Blue, Red, Yellow, Brown, gray
Uneven, UnevenArthur Thomas, Gemstones (2009)
Uneven, Uneven, Gems, Difficult, Fibrous
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Al 2O 3Arthur Thomas , Gemstones (2009)