Abstract: An improved forming tool for imprinting a textured pattern in concrete, the tool having the property of appearing identical to a fixed observer after rotation about a center point in four orientations. The tool can be fitted with adjacent tools in any one of the four orientations. The tool includes a backing plate having handles for imprinting a pattern and lifting the tool from the concrete. The underside of the tool includes a plurality of rectilinear grout lines separating areas of texture, the grout lines forming grooves in the concrete to define simulated stones having a roughened surface left by the textured areas.