White, Red, Green, Blue, Brown, Yellow, Brown, Black, pink, Blue, Green, Yellow, Brown, Yellow, Brown, orange
Blue, White, Grey, Yellow, Green, Colorless, Red, gray
ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Conchoidal, Brittle
[C,H,O]
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2