Rocks, Gems & Geodes

Kick-start your very own rock collection with the 36 stones. Then use the included crystal powder and mold to grow a geode formation. Collect rocks and conduct experiments, such as a scratch test and float test, to discover their hidden properties. You'll even learn how to make your very own rock tumbler. Use the fact-filled book to keep exploring the world around you! Comes with: 36 rocks, display tray, crystal powder, geode mold, plaster, magnifying glass

• Format: Misc.
• Language: English
• ISBN: 1338575724
• ISBN13: 9781338575729
• Release Date: January 1
• Publisher: Klutz
• Weight: 0.30 lbs.
• Dimensions: 1.8" x 8.1" x 11.7"