Rocks, gems, & geodes is the complete explorer's kit that will open up the world of earth science and geology! Kick-start your very own rock collection with the 36 colorful stones, then use the included crystal powder and mold to grow your own geode formation. Collect rocks and conduct experiments, such as a scratch test and float test, to discover their hidden properties. The fun doesn't stop there - you'll even learn how to make your very own rock tumbler. Use the fact-filled book to keep exploring the world around you as you find more samples to collect. Recommended for 1 player, ages 8 and up. Made in China. Package dimensions: 11. 750 x 8. 000 x 1. 750 inches. Includes 32-page book with rock facts, experiments and more, 36 rocks and gems, display tray, geode mold, purple crystal powder, plaster powder, magnifying glass. Learning Skill: Science Recommended Ages: 8 Years And Up Measurements: 11.75 Length/Inches Assembly: Assembled Base Material: 100% Rock Care: Wipe Clean Country of Origin: Imported