Canada, Russia, Kenya, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Norway, Brazil
India, Canada, Brazil
Green, Greenish, Black, Green, Greenish, Black, Green, Greenish, Black, Reddish, Brown, Black, Green, Greenish, Black, Reddish, Brown, Black, Green, Greenish, Black, Reddish, Brown, 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
Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Uneven, UnevenArthur Thomas, Gemstones (2009)
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.