Reddish, White, Violet, gray, Black, Reddish, White, Violet, gray, Black
Brown, Yellow, Red, Green, Blue, gray, Violet
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Uneven, Brittle