Also known as / varieties
Grès de la Warche, Pierre de Paliseul, Pierre de Mouzaive, Pierre de Ranhissart.

Extraction zone
Ardennes, provinces of Liège and Luxemburg.

Mineralogical composition
Combination of silica, clayey, ferruginous and aluminiferous minerals.

Maximum dimensions of rough blocks
Length 0,5-3 m; width 0,25-2 m; thickness 0,4 m varies with type.

Minimum thickness for application
Tile 3 cm - vertical element 5 cm.

Surface treatment
Untreated, split, sometimes sawn.

Common applications

Outside : flat rubble stone, corner, voussoir, lintel, floor tile, wall coping, sill, furniture.

Inside : floor tile, interior decoration.