Blue Celestine + Dude Rocks Card

The Blue Celestine comes with a Dude Rocks informational card for your son to learn more about the stone. Here is what it says:

Blue Celestine is found in sedimentary rocks primarily in Madagascar. Its blue color comes from the interaction with strontium during the formation process. Celestine is found in cluster formations and also in geodes. The largest geode in the world is a 35 foot celestine geode. Most practical applications of the mineral involve extracting the strontium, which is used in fireworks, and the manufacturing of glass.