Tumbled Botticino Marble Coaters are made out of the genuine Italian Botticino Marble. Due to the nature of the tumbled marble, each piece may vary in color and have occasional veins and chips. This is what creates the natural beauty of this great product. All individual coasters are packaged in a white gift box. Coaster Sets of 4 are packaged in a 2-piece burgundy gift box. This product is dishwasher safe, lends itself to unlimited color reproduction and all coaster bottoms have a non-slip cork bottom.