Space Age Crystal Kit: 13 Crystals Grow your own gorgeous geodes with the Space Age Crystals Kit (13 Crystals) from Kristal Educational. Each kit grows 5 crystal clusters, 4 geodes, and 4 single crystals. Each kit contains crystal-growing chemicals, geode mold, crystal growing containers, lids, stirring sticks, and a 48-page Space Age Crystals booklet. Additional items may be required. Fun and fascinating, this kit is an excellent gift for the budding scientist in your life. For ages 12 and up - Instruction booklet included