In this study, the crystallization behavior of glass-ceramics containing varying amounts of potassium mica-cordierite was investigated. The effect of stabilizer addition on microstructure and crystallization behavior and different ratios of mica-cordierite on microhardness, machinability and electrical properties were also characterized. First, glass compositions containing different ratios of potassium mica and cordierite were prepared, mixed and casted at proper temperatures. 4 mass % CeO2 as a stabilizer and 2 mass % CaO as a melting agent were added to the glass compositions. Then, disc and cylindrical shape samples were prepared and subjected to controlled heat treatment procedures. All samples were characterized by using electron microscopy and a series of mechanical tests was also conducted. Chemical durability and electrical resistivity of materials were also determined.