Thames & Kosmos Rock Tumbler
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This custom-designed, user-friendly rock tumbler allows budding geologists and gem collectors to transform rough stones into beautiful polished rocks while exploring topics like erosion, weathering, and the geological rock cycle.
- Quality, innovative design provides a fresh alternative for a classic science device at a competitive price
- Built-in timer includes different settings, allowing it to run for up to seven days
- Includes jewelry fasteners to transform your rocks into accessories
- 450g capacity (over 1 pound)
- USB-C power supply
Ages 8+