Brown, Yellow, Red, Green, Blue, gray, Violet
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Brown, Brownish, Black, Colorless, Green, gray
Yellow, White
White, Brownish, Brownish, White
Uneven, Brittle
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular