The G.M.C. Group is a leader in Sardinia for ornamental stone work. It has been present for over 15 years on the Sardinian scene, with two branches: the main G.M.C. branch, which is situated in the industrial zone of Sedilo, in the province of Oristano and the G.M.C. 3 s.n.c. situated on the industrial port of Oristano.

At the moment the main market is regional or national, but the group has already had contacts with the European market, plus the American (USA) and Middle-East markets. The firm is specialized in the extraction and the working and finishing of Sardinian basalt and trachyte, but it also treats and commercialises in granite and marble, extracted from the Sardinian quarries.