ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
SbTaO 4Ulrich Henn and Claudio C.
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references