Italy, India, USA, Canada
Australia, Mexico
White, Colorless, Green, Yellow, Brown, Brown, Colorless, Yellow, White, Green
Yellow, Greenish, Brownish, Colorless, White, gray, Yellow, Green, Blue, Violet, Blue, Colorless, Green, gray, Yellow, Blue, Colorless, Green, gray, Yellow, orange
Brittle, Uneven, Brittle, Uneven
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
NaCa16Si23AlO60(OH)8•64(H2O)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references