National Geographic Rock Tumbler

The National Geographic Hobby Rock Tumbler gives students a hands-on way to learn about rocks, minerals, erosion, weathering, and the natural processes that shape the world around us. Students can watch rough stones change through the different stages of tumbling and polishing, then use their finished stones for collecting or simple jewelry projects.

The kit includes a rock tumbler, rough gemstones, four stages of polishing grit, a rock strainer, jewelry settings, and a learning guide with instructions and information about gemstones. �

Manuals+ +1

As students work through the tumbling process, they can explore:

🪨 Rocks & minerals

🌎 Geology & Earth science

🔬 Weathering and erosion

⚙️ Mechanical processes

🧪 Observation and scientific investigation

⏳ Patience and following a multi-step process

💎 Gemstones and mineral characteristics

The multi-stage process makes this more than just a craft project—it gives students an opportunity to observe a real physical process over time and see how rough natural materials can be transformed through abrasion and polishing.

Great addition to the Rocks & Minerals Discovery Kit.