This coaster was handmade using a gel medium transfer. The coaster is made of 4"x4" tumbled marble tile & each one is an original with its own “distinctive look” & will vary due to the natural materials of the stone. The top of the coaster is sealed & waterproof. The back is covered with cork with my signature near the edge. Elliot’s Seafood Grille & Chop House in Edison Park - Original Coaster