Stain 6450 Praseodymium Yellow 100 GmsStain 6450 Praseodymium Yellow Zirconium Praseodymium Yellow Zircon, an inorganic pigment, is a reaction product of high temperature calcination in which Zirconium (IV) Oxide, Silicon (IV) Oxide, and Praseodymium (III, IV) Oxide (Pr6O11) in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of zircon. Its composition may include any one or a combination of the modifiers alkali or alkaline earth halides. Can be