Not just a coaster but an expertly handcrafted photo transfer onto white Carrara marble. Unique in every way. To be used as a piece of art for your table. Best given to someone who loves to receive something special. Best to receive as a housewarming gift, wedding gift, going away gift, birthday, holiday and just because gift. They can be used with very hot coffee cups or a cold Chardonnay. Can be washed but not submerged in water because the corked backs aren't sealed. Remember, the grain of the marble becomes part of the final image. Each coaster is one of a kind.