Monoclinic celsian derived from an innovative route, i.e. cation exchanged zeolites heat-treated at low temperature, was added at differentcontents (10, 20, 30 wt%) to a glass matrix, in order to improve its mechanical and electrical performances. The effect of the celsian reinforcementwas evaluated by testing several properties of the composite materials, such as the elastic modulus, abrasion resistance, flexural strength andelectrical insulation. The results so far obtained suggest that the addition of the monoclinic celsian to the glass matrix may produce low-costparticulate composites with interesting technological properties.