The article presents the research findings of the influence of plasma-chemical modification on aesthetic and performance properties of a composite glass-ceramic material. The optimum compositions of composite glass-crystalline materials based on broken colored glass containers, broken porcelain and liquid glass have been developed. It has been shown that the composite glass-crystalline material possessed the increased mechanical properties and relatively low esthetic properties. It has been determined that in the process of plasma treatment the front surface undergoes fire polishing with the formation of a high-quality coating. When exposed to a high-temperature jet, the surface of the glass-crystalline material is heated up to 2000 °C, resulting in the enrichment of the front surface with silicon and aluminum oxides and depletion of alkali and alkaline-earth oxides. It has been experimentally confirmed that after the plasma-chemical modification the diffuse reflectance coefficient, water resistance, acid resistance, alkali resistance and heat resistance of the face surface of the composite glass-crystalline material are increased.