These coasters were handmade using a gel medium transfer. The image on each coaster is taken from a Polaroid manipulation created using Polaroid time zero film which was discontinued in 2005. The coaster is made of 4"x4" tumbled marble tile and each one is an original with its own "distinctive look" and will vary due to the natural materials of the stone. The top of the coaster is sealed and waterproof. The back is covered with cork with the artists signature near the edge.