✨ Unleash Your Inner Geologist with Crystals That Shine! Satisfaction guaranteed with National Geographic's trusted brand! Choose from 6 dazzling colors, including glow-in-the-dark! Light-up display to highlight your stunning crystal collection! Watch your crystals flourish in just 3-4 days! Includes a STEM guide to spark curiosity about geology! 6 Color Options Light-Up Display Grows in 3-4 Days The NATIONAL GEOGRAPHIC Mega Crystal Growing Kit allows kids aged 8-12 to grow vibrant crystals in just 3-4 days. With easy-to-follow instructions, a light-up display, and a STEM learning guide, this kit combines fun and education, making it a perfect gift for budding scientists.