Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Perfect on [001] and [011]
[001] good, [210] distinct
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references