https://www.osmmat.com/product/stone-mat/diatom-cup-coaster/Versatility and Beyond:Both the Diatom Cup Coaster and Diatom Soap Dish are versatile accessories that can be used beyond their primary applications. The Diatom Cup Coaster can also be used as a plant coaster, protecting surfaces from water damage caused by potted plants. The Diatom Soap Dish can also be used in the bathroom or kitchen to hold small accessories such as jewelry, keys, or sponges.