White, Colorless, Blue, Red, Green, Yellow, Violet
Yellow, Greenish, Brownish, Colorless, White, gray, Yellow, Green, Blue, Violet, Blue, Colorless, Green, gray, Yellow, Blue, Colorless, Green, gray, Yellow, orange
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references