Yellow, White, Brown, Brownish, Black
Yellow, Greenish, Brownish, Colorless, White, gray, Yellow, Green, Blue, Violet, Blue, Colorless, Green, gray, Yellow, Blue, Colorless, Green, gray, Yellow, orange
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references