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