Pennsylvania Map Coaster Set An impressive collection of marble coasters featuring a beautifully colored map of Pennsylvania. Each Pennsylvania coaster measures 4" x 4", and is constructed of high quality, Botticino tumbled marble. A perfect gift for weddings, anniversaries, business gifts and any other special event in your life. Best of all, these Pennsylvania coasters are artfully constructed in the USA! Botticino Tumbled Marble Each Tile Measures 4"x4"