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....

In stock
  • RevType
  • 2
  • Manufacturer
  • Klutz
  • Sku
  • 9781338575729
  • Identity
  • 27079897861

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