Made with recycled opaque glass, Stone & Pewter AccentsMarbleized Penny Rounds are offered in 13 colors with pearl or silk finishes. The tiles are hand poured and feature slight variations in color, tone, and shade. The tiles come on paper-faced sheets that are 0.98 square feet, and the thickness of the tiles ranges from 5.5 to 6 mm. The marbleized glass tiles are also available in square and brick mosaic options. •