geology

Delve into mystery of what treasures rest deep inside the earth as you uncover the 12 genuine gemstones inside this giant piece of geode! Uncover s...

Tip the hourglass and watch the "sand" create amazing designs. Lovely to look at, the Magnetic Sand Timer makes instant magnetic sand sculptures! H...

Hidden gemstones await in this National Geographic Starter Rock Tumbler Kit. The young geologist in your life will be fascinated by the process of ...