-GROW CRYSTAL COVERED TREES - Watch as crystals grow from the branches of the included evergreen and cherry trees like magic; you’ll see the first crystals in minutes and trees will be fully covered in as little as 6 hours. -YOU CHOOSE THE COLORS - This is more than just a science kit! Color each tree any way you’d like with the 5 watercolor pens in the kit and grow crystals in the colors you’ve chosen. It's a craft project and crystal kit all in one! -REAL SPECIMEN INSIDE - After the crystals are grown, you'll enjoy examining the genuine geode specimen in the kit! A full-color learning guide is included and is packed with fascinating facts about crystals. This STEM craft kit is unforgettable! -COMPLETE ACTIVITY SET - Because the crystals absorb the ink from the markers and grow in the colors drawn, this kit combines the science of a crystal growing lab with the creativity of an art project, making this a great activity for girls and boys. -HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!