Colorless, Yellow, Brown, Green, Colorless, Green, Yellow, Red, Reddish, Brown
Yellow, Brownish, Reddish, White, Colorless, Blue, Green, Yellow, Green, Yellow, Brownish, Reddish, White, Colorless, Blue, Green, Yellow, Green, Violet, pink, Yellow, Green, Violet, pink
White, Yellow, Colorless
White, Green, White, Green
Brittle, Metallic, Brittle, Metallic
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
Ca(Mg,Al)3(Al3Si)O10(OH)2
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)