The Granite Cluster consists of companies frome the various associations of the sector and the Granite Technology Centre. These associations are:

• Asociación de Canteiras de Galicia (ACG) (Galician Quarry Association)
• Asociación Galega de Graniteiros (AGG) (Galician Granite Workers Association)
• Asociación de Maquinaria para la Piedra (GALIMAC) (Stone Machinery Association)
• Asociación de Marmolistas (Marble Workers Association)