Colorless, Yellow, Blue, Reddish, Black, Reddish, Brown, Blue, gray, Black, Reddish, Brown, Blue, gray
Brown, Green, Brownish, Yellow, Greenish, White, Brown, Black
Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Fibrous
Perfect on [001] and [011]
[010] Perfect, [100] Distinct, [011] Distinct