Blue, White, Grey, Yellow, Green, Colorless, Red, gray
Yellow, Brownish, Reddish, White, Colorless, Blue, Green, Yellow, Green, Yellow, Brownish, Reddish, White, Colorless, Blue, Green, Yellow, Green, Violet, pink, Yellow, Green, Violet, pink
Blue, White
White, Green, White, Green
Uneven, Conchoidal, Brittle
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)