Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
{100} Perfect, {110} Good, {011} Distinct
[001] good, [210] distinct
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references