This is a fixed set of five genuine tumbled yooperlite stones rather than a single specimen or a weight-based bulk listing — a syenite rock containing fluorescent sodalite, first identified along Michigan's Lake Superior shoreline, that glows a distinctive orange under UV light while appearing an ordinary gray-blue under normal daylight.
Because there are five individual pieces in every set, each tumbled and polished on its own, you get some natural variation in size, surface pattern, and fluorescence intensity from stone to stone. That variety is useful if you want to place pieces in more than one room, share a few with someone else, or simply compare how each individual stone glows under a UV light.
As with any yooperlite specimen, the fluorescence only appears under a 365-395nm UV (blacklight) source in a dim room — under normal lighting, the stones look gray-blue rather than glowing. The five-piece format makes that demonstration more interesting than a single stone would, since holding several pieces under the light side by side shows how much individual variation exists even within genuine yooperlite.
Five smaller stones also make it easier to carry one in a pocket for the day while keeping the rest at home, something a single larger display specimen doesn't offer in the same way.
For anyone who'd rather have one larger, fully polished display specimen instead of a multi-piece set, a single larger piece is worth considering as an alternative or companion purchase.
Explore more in our tumbled stone collection healing cluster collection.