Colorless, White, Blue, Yellow, Grey, Brown, Colorless, White, Blue, Yellow, Grey, Brown
Colorless, White, Colorless, Greenish, Brown, White, Colorless, Greenish, Brown, White, Colorless, Greenish, Brown
Irregular/uneven
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect
Perfect on {010}, distinct on {100}
Vitreous, Pearly
Vitreous, Silky, Pearly, Waxy