Yellow, Greenish, Brownish, Colorless, White, gray, Yellow, Green, Blue, Violet, Blue, Colorless, Green, gray, Yellow, Blue, Colorless, Green, gray, Yellow, orange
Green, White, gray, Green, White, gray
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Fibrous, Difficult, Fibrous