Natural Marble Coasters are mined in the mountains of Turkey, then imported and manufactured in the USA. Each Coaster is made of genuine Marble. Coasters have a cork backing which protects surfaces from scratches and stains. Artistic designs are printed on the surface of each coaster. These attractive coasters add elegance and distinction to your space. Because this is natural marble, the coasters may vary in shape and color. Coasters are made for long lasting use.