Black, Green, Black, Green, Black, Green, gray, Black, Green, gray
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
Not Available, Not Available, gray, Green
White
Uneven, Brittle, Metallic, Brittle, Metallic
Uneven, UnevenArthur Thomas, Gemstones (2009)
NaNa2(Fe++4Fe+++)Si8O22(OH)2
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.