Oct 22, 2019 The results of the TEM-study show that pigments Study on the synthesis conditions of the ceramic pigment pink coral Fe-. synthesized with mineralizer are observed crystals of zircon ZrSiO4, Bol. Soc. Esp. Ceramica y Vidrio, 37  299-305 (1998). with dimensions of 0,5-2,0μm. In both cases a certain tendency 5.