They are distinguished, according to the edge length (in cm), in the following types: 4/6 - 6/8 - 8/10 - 10/12 - 12/14. Every type includes only elements with edges with length ranging between the above-cited limits (at the most 1 cm more or less). The various edges of the small cube do not have to be necessarily equal, and the various faces do not have to be necessarily orthogonal to one another. The upper surface of the cube will have to be natural, right as it gets out of the mine, and with no excessive roughness. The four side-faces are obtained by hydraulic cleft (they are not sawed) and then they have a rougher and slightly acute surface.

Split tiles are produced with a natural quarry surface and split sides, with normal widths from 10 to 40 cm as desired going in multiples of 5 cm, squared or of set size with a thickness ranging from 1 to 3 cm, 3 to 6 cm and from 5 to 8 cm. The length is variable.

Type of tiles:

• Regular cleft tiles
• Milled tiles
• Semi-polished tiles with milled sides
• Polished tiles with milled sides
• Blazed tiles with milled sides

For all types and workmanships the rock must be substantially uniform and compact and with no weathered parts. Rocks with subdivision planes which might determine the breakup of the elements after the laying must be excluded.

These are used to pave courtyards, avenues, pavements, pedestrian crossings, gardens and for wainscots in homes. There is no need to do any special ,manufacture. They’re just chosen for their thickness and dimension and are available as follows: normal, thin, giant and giant thin.

They are produced in standard sizes: 4x6 - 6x8 - 8x10 - 10x12 - 12x14 - 14x18 cm. When these coarse tiles are laid on their sides one next to the other they are used for paving roads with steep gradient or raps giving access to garages; when they are laid flat cut side uppermost they are used for facing both indoor and outside walls, pillars, wainscots. Sizes are from 2 to 10 cm.

They are used to border all sorts of paving. They mark out footpaths squares, and road sides, as well as traffic-divider areas or steps. - They are divided into categories according to the working they undergo, and are called:

• Kerbs with split head; visible side natural surface;
• Kerbs with natural surface head (or quarry surface) and sawn sides;
• Kerbs with sawn head and visible side natural surface;
• Kerbs with bush hammered textured head (bocciardato) and visible side natural surface;
• Kerbs with flame textured head and visible side natural surface

To build breast and/or boundary walls. With natural surface and rough sides. The thickness can vary from 10 to 20 cm or from 20 to 30 cm

The borders of town squares, roads, pavements, gardens, drives etc. can be designed with binders of different sizes. They provide texture in the streetscape. Being an extremely versatile product, the binder is used either to contain or mark the edge of paved areas, squares, streets, etc. or to shape flower-beds, traffic islands and gardens. Alternatively, it can be used to face low walls and steps. Its upper surface is natural and its sides are split at right angles to the plane.

Porphyry is used to face steps of various types; both the rise and the tread can be faced with tiles as from the quarry, flame-processed or sanded. Polished and semipolished tiles are the most suitable to face indoor staircases; whereas massive natural steps of various types can be produced with the treads and the sides either natural or worked

Natural surface and sawn edges, thickness from 1 to 3 cm. Flamed surface and sawn edges, thickness from 1 or 2 cm and particular measures on request. Risers are generally used to cover the vertical side of a step, as an integral part of it. If the edges are visible, they can be calibrated and shaped the same way as the faces of the steps: i.e. they can be split, chiselled, smoothed or polished. Available upon request: interlocking risers, risers with chamfered, shaped or bevelled edges. Where the horizontal and vertical surfaces meet, a finishing strip matching the surrounding materials is required to conceal the joint. This strip is called skirting board/baseboard.