The concrete material emphasises the natural appearance of stone and also promotes its robust and low-maintenance character. Large format and smooth visible surfaces as well as slightly chamfered edges and lively patterns accentuate the harmonious appearance of these bricks and, together with nuanced colour shades such as quartzite and shell limestone, form visual highlights. Thanks to their light weight, it is easy to mount these hollow bricks in a height of up to two metres, the top row can be planted in an individual way as desired.