(365nm flashlight included.) The product is a 5lb 9oz Yooperlite Fluorescent Sodalite, which is a rare and vibrant mineral found on the shores of Lake Superior in the United States. This specimen emits an insanely bright glow under black light, making it a highly sought-after collectible among mineral enthusiasts. Its unique properties and striking appearance make it a standout piece in any collection of crystals and mineral specimens.