The choice of the material and the processing route will depend on the desired technical and aesthetical characteristics of the product. The wollastonite-based glass-ceramic has been proposed as an alternative similar to marbles [7–9]. Thus, sintering coarse frits packed in refractory molds, also known as Grain Glass Sintering(GGS), is a technique for making products with the esthetic effect of marble. Large thick plates that resemble ornamental rocks may be produced easily. The literature also shows that this route may be used successfully to transform industrial waste into materials for architectural use with high aggregate value[10].