Porphyry "crazy pavement" are obtained directly from the selection of the quarried material. The two surfaces and the edges are natural cleft. The shape is irregular. The different types distinguish themselves according to their sizes and thicknesses. The types are:

• Normal type: the diagonal and the average have a size of 200. The thickness varies from 20 to 50;
• Thin type: the diagonal and the average have a size of 200. The thickness varies from 10 to 30;
• Giant type: the diagonal and the average have a size of 400. The thickness varies from 30 to 70;
• Thin-giant type: the diagonal and the average have a size of 400. The thickness varies from 20 to 40.