The Thames & Kosmos Rock Tumbler

The Thames & Kosmos Rock Tumbler is designed to polish rocks into smooth, shiny gems.

It features a quality, innovative design, a built-in timer with various settings, and comes with jewelry fasteners for creating accessories. The tumbler has a 450g capacity (over 1 pound) and is powered by a USB-C connection. It's user-friendly, suitable for both beginners and experienced rock enthusiasts, and includes an assortment of authentic rock samples and four polishing grits to get you started.