Yellow, Greenish, Brownish, Colorless, White, gray, Yellow, Green, Blue, Violet, Blue, Colorless, Green, gray, Yellow, Blue, Colorless, Green, gray, Yellow, orange
Brown, Yellow, White, Brown, Greenish, Yellow, White
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Even, Yellow, White
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
K(Mg,Fe++)3[AlSi3O10(OH,F)2