Block shaped setts, most commonly seen in what most people would term 'cobbled' streets, are usually hand hewn or sawn from sandstone, gritstone or granite. However, there are reconstituted stone versions available, which are cheaper and lighter than the real thing. They may be found with a domed surface, or may be sawn to create a smooth and level face.

Although setts may be laid in almost any pattern, two of the most popular are coursed (as seen in cobbled streets) and the European fan pattern, where the stones are laid in interlocking fan shapes. This is an elegant and stylish pattern that is often used for civic plazas and other large spaces, where its sweeping lines can be appreciated.

In comparison, cobbles (or cobblestones) are large, rounded stones formed by the action of glaciers or the sea. They tend to be about 6-20 cm in size, and can be set in mortar to form an interestingly textured finish. However, their rounded profile can make them very difficult to walk on, so they are best used for decorative areas such as around ponds or statuary in the garden.