These Curator's Choice Yooperlite spheres appear as ordinary grey stone in daylight but glow a vivid orange-yellow when viewed under a 365nm UV blacklight (UV light required for effect). A stunning natural phenomenon perfect for display. Yooperlite is the trade name for Syenite rock containing fluorescent Sodalite.
You will receive one Yooperlite Sphere in the size range you choose,similar to those pictured, each with its own unique pattern and coloration.
