The National Geographic Glow-in-the-Dark Crystal Growing Kit is an exciting science experiment for kids of all ages. This comprehensive kit includes everything you need to grow your dazzling green crystals, including growing powder, a seed rock, a stir stick, and a genuine fluorite crystal. The kit also comes with a National Geographic learning guide packed with interesting facts about crystals, making it an interactive learning experience. It's a great introduction to geology and chemistry, sparking children's lifelong love of science. The kit is backed by National Geographic's 100% satisfaction guarantee. National Geographic is a renowned non-profit scientific and educational organization, and the net proceeds from their toys support vital exploration, conservation, research, and education programs. The set contains crystal growing powder, a seed rock, a stir stick, the learning guide with instructions, and a genuine fluorite crystal. The kit's dimensions are 23.5 x 5.72 x 15.88 cm, and it weighs 362.87 grams. It is recommended for children aged 3 years and up, as it contains small parts.