Roots. Pick a state (or a country), Pick a town.. All our coasters are made from 4" x 4" travertine marble tiles and backed with cork to protect furniture from moisture and scratches. Each coaster takes on different appearances due to the underlying marble tile which has its unique veins, pitting and marbleizing. The beauty of the marble shines through giving it a beautiful weathered look. CARE: Wipe with a damp soft cloth. Not dishwasher or oven safe. Please message me if you would like something designed for you.