The aim goal of this study is to investigate the sintering and the crystallization of a CAS glass-ceramic (CaO–Al2O3–SiO2) obtained by theGGSprocess. We correlate the esthetic effect with the results obtained from thermal characterization of this ceramic. In addition to the technical attributes, we seek to reproduce an esthetic effect similar to that of marble products. This esthetic effect corresponds to opaque particles surrounded by the vitreous matrix with a translucent texture. The use of coarse frits with a surface crystallization mechanism might fulfill this requirement [11]. However, sintering and crystallization phenomena could not be limited by the particle sizes in the frits, considering the desired esthetic effects.