Green, Blue, Yellow, White
Yellow, Greenish, Brownish, Colorless, White, gray, Yellow, Green, Blue, Violet, Blue, Colorless, Green, gray, Yellow, Blue, Colorless, Green, gray, Yellow, orange
Not Available
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Mg 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references