This coaster resin mold is fantastic! It looks like a cut geode once you pour the resin in and use some of the different colors. I used a toothpick to mix and swirl the colors around. I loive this mold and the design of the coasters! I am making a set for my mother and some of the other people i know. It is easy to use and durable. Cleans up easily too. Can't beat this!