Table 1.

Characteristics of granite slabs.

Sample’s Mark	Processing Texture	Roughness Parameters, μm				Surface Characteristics
		Sa	Sz	Ra	Rz
PO	polishing	4.05	213.87	1.85	25.96	high degree of smoothness, shine
PL	flaming	37.28	149.19	25.93	130.47	appearance close to natural fracture, with clear changes in the surface of the quartz grains caused by temperature and flame
SZ	brushed	38.20	556.38	27.11	294.39	clear roughness with abrasive scratches
GR	graining	97.11	839.01	83.75	418.39	even but rough surface with characteristic regular concaves and convexities