Yooperlite Sphere Yooperlite is a term used to describe a unique type of rock, specifically a rich variety of sodalite syenite found in Michigan's Upper Peninsula. They appear ordinary in daylight but glow intensely with colors such as yellow, orange, red, and pink when exposed to ultraviolet (UV) light. Besides being fascinating collectibles, yooperlites are also used in lithotherapy for their supposed calming, stabilizing, and grounding properties, which are said to promote emotional balance and intuition. Weight: 413 g Size: 67 mm Please look at the photos for a good impression Will be packed with care and shipped with track and trace