Schmuck-Kristalle machen, die im dunklen Leuchten, Galileo, € 5,- (4020 Linz) - willhaben
Galileo Lab Phosphoreszierende Kristalle züchten für 4,61€ (statt 9€) - Prime
Amazon.com: Clementoni 69487 Galileo Science - Phosphorescent Crystals Experiment Box for Little Scientists Toy for Children Aged 8 Years and Above Colourful Experiments for Nursery : Toys & Games