Crystal Lab 25 Experiments Buki
How do you grow natural coloured crystals? How do you make instant crystals? How do you make phosphorescent crystals that glow in the dark? 25 experiments to grow crystals in every size, shape and colour. 9 crystal powders are provided to easily and safely grow them. Experiments using a microwave for more speed and safety. Instruction sheet with colour illustrations. Recommended age : 8 years + Requires 2 LR06 batteries, not included.