Each coasters measures 4x4 inches & is made of natural stone tile. The edges have a roughed up, rustic look & with the texture of the tumbled stone, no two coasters are the same! A layer of lacquer is applied to the top to protect the design while a piece of cork is applied to the bottom to keep your surfaces safe. All sets come with 4 coasters. These make a great gift & are a fun addition to your home dcor! Because no two stone tiles are the same no two coasters are the same. It give each coaster their own special character :) Chinese Crested Powder Puff Coasters ~ Dog Housewarming Gift Mom