room of glass factory full of colorful smalto discs for mosaic tiles

italy art craft product artist arts culture entertainment building activity circular disc colourful colours decoration decorative fabric factory friuli geometric shape glass glazed unglazed graphic manufacturing material mosaic multi colored multicolor opaque ornament patterns piles production line province pordenone room smalto spilimbergo tesserae tile traditional full colorful discs for tiles produce works broken different shapes colors