These borax crystals are SO COOL and beautiful! Use pipe cleaners and a simple borax and water solution to grow your own crystal gems. This is such a pretty and fun science experiment! Borax Crystals Making borax crystals is such a cool science experiment. It takes a bit of patience to let the crystals grow, but the results are amazing! Borax crystals are a great chemistry experiment showing the recrystallization process. Kids can see how molecules react to different temperatures, and…