ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
CaZrBAl 9O 18Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)