Tumblestones or "tumbled stones" as they are also called are made by "tumbling" rough crystals in grit for a number of days in a giant tumbler machine. As time passes, finer and finer grit is used until the edges are smoothed and the crystals start to become polished. In the end they end up beautifully smooth. Due to the tumbling process, each stone will be unique in shape, size and colour.
Tumblestones are available in a wide variety of crystal types. Their smooth finishes makes them naturally tactile to hold and they're great to have on hand to pop into a pocket, bag or your desk drawer. Tumblestones also work well displayed in a bowl or laid out on a tray.