Porphyry kerbstones are made from large slabs of various sizes and are used as borders for the creation of sidewalks, stairways, hedges, etc. They are thick elements, the exposed parts of which can be split or sawn and then finished in varying ways.
The head (the upper part of the kerbstone) is made, the face (the surface perpendicular to the laying surface), the foot (the part opposite the head) and the joints (the faces that are abutted to make the kerb) may be split or sawn. According to processing, the following kinds of kerbstones are obtained:
Split, with thickness ranging from 5 to 10 cm
Natural quarry face
Sawn and flamed