ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven
{001} Distinct
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
ZrO 2Arthur Thomas , Gemstones (2009)
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references