These cute coasters are the Diamond dot style! There are 8 total 2 beagles, 2 Bassett hounds, 2 greyhounds, and 2 Boston terriers. They are made with thin wood, cork board on the bottom to help keep them from sliding around to much, the gem stones are sealed on with a water proof modge podge to help protect them from spills. They should not be put in the dish washer or submerged fully in water but rinsing and wiping them down should work out great.