ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
SbTaO 4Ulrich Henn and Claudio C.
Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references