Best Seller | Klutz: Maker Lab: 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.... ... more Klutz: Maker Lab: 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.... The Scholastic Store | | $24.99 go to store |