Colorless, White, Blue, Yellow, Grey, Brown, Colorless, White, Blue, Yellow, Grey, Brown
White, Colorless, White, pink, Yellow, Brown
Irregular/uneven
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect
Perfect on [10 1 1] three directions with angle of 74° 55