White, Colorless, Yellow, Green, Blue, Reddish, Brown, Red, Brown
Colorless, Yellow, Blue, Reddish, Black, Reddish, Brown, Blue, gray, Black, Reddish, Brown, Blue, gray
Uneven
Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
{010} Perfect, {210} Perfect, {010} Imperfect
Perfect on [001] and [011]