Black, Brown
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, Management Team (2012), Conchoidal, Brittle
Uneven, UnevenArthur Thomas, Gemstones (2009)
Fe 3O 4Ulrich Henn and Claudio C.
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.