- BECOME A MASTER OF MINERALS! Explore chemistry while growing real gypsum crystals
- SIMPLE INSTRUCTIONS; crystals only take one day to grow; available in 5 colors
- PERFECT FOR AGES 14 YEARS AND UP; instructions are easy to follow; high quality materials
- INSPIRE A PASSION FOR SCIENCE; encourages exploration, experimentation; science becomes playful!
- SIMPLE PACKAGING; hedgehog measures 3.25 x 2 x 1.5 inches. Random color is shipped.