With the aim to find effective procedures to entrap noxious or toxic metals in readily and safely disposable solid systems, this paper analyzes the possibility to convert a zeolite, previously used to remove undesired cations from wastewaters by ion exchange, into a ceramic product. Experimental tested materials were: zeolite A, the cheapest synthetic zeolite on the market, and the cations Co2+ and Cr3+, which couple a marked environmental dangerousness with a good ion exchange affinity for zeolite A. Amounts of pre-exchanged zeolite A powders, dry-shaped as cylindrical compacts, were fired at temperatures ranging between 900°C and 1,100°C and the obtained rigid materials were characterized by mechanical and X-ray diffraction analyses and tested as regards the cation leaching performances. The results indicate that ceramization of pre-exchanged, pre-formed zeolite compacts may be a suitable procedure to stabilize noxious or toxic metals and, in addition, that the obtained product can be considered for use as a technical ceramic material.