Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
Colorless, White, Yellow, Green, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Brittle, Uneven, Brittle, Uneven
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
(K,Na)Ca4Si8O20(F,OH)•8(H2O)