White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
Red, Violet, Blue, Colorless, Yellow, White, Red, Blue, Colorless, Yellow, White, Red
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Violet, Conchoidal, Brittle, Conchoidal, Brittle