The paving block, which is a parallelepiped shape, has a natural upper face with parallel sides and cut off kerbs, generally orthogonal to the plane or slightly undercut.
Historically used for... 
Since they are produced from thick, flat quarry slabs, kerbs always have the external side with natural surface and have good finishing on one side. The possible finishing for the head ranges from...
Natural or flamed surface tiles which come from squaring slabs extracted from quarries, which are processed or mechanically compressed (by shearing), thus creating splits that are orthogonal to the...
Natural surface tiles, which come from squaring slabs extracted from a quarry, are processed by sawing with diamond tipped discs, creating perfectly square and smooth sides. Generally, the tiles...
Tiles with the processed surfaces resulting from the cutting of blocks extracted from a number of quarries which have smooth sizes and thicknesses. The tiles are sawn and the surface is worked on...