regular or irregular pieces of colored stone, glass or ceramic known as smalt for decorative art mosaic, close-up. mosaico hobby

smalt stone mosaico hobby element creativity mosaic ceramic tenaglie tesserae tiling surface architecture decorative art artificial glass small cobalt smalte tessellation top view tile tagliolo potassium smalto regular irregular pieces cut suitable materials skinning details craft cutting marble terrazzo variety pebbles geometric silicate modern colored close-up close-up hobby