White, Yellow, Pale blue, Brittle, Uneven
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Perfect on {100} and {010}, imperfect on {101}
Perfect on [10 1 1] three directions with angle of 74° 55