Sanstone Quarry and Processing PlantBeau Grey Sandstone is a fine to medium grained sandstone with lithic quartz arenite matrix. This type of sandstone holds consistent workable properties that allow the stone to take a range of surface finishes including polished. Its suitable for interior and exterior application and has a modern contemporary feel. Beau Grey Sandstone is extremely uniform in colour that is permanent and highly desired. Beau Grey Sandstone will transform your inspiration into quality projects.