Check the listing for details. Fluorescent Mineral Specimen Set 4 Pieces UV Reactive. L4. Condition: New. Listed at 30.00 USD. The Fluorescent Mineral Specimen Set includes 4 pieces of UV reactive minerals that glow brightly under black light. These unique crystals and mineral specimens are perfect for collectors or enthusiasts of rocks, fossils, and minerals. The set features a variety of fluorescent minerals that are sure to impress with their vibrant colors and captivating beauty. Each piece is carefully selected to showcase the natural beauty and properties of these special minerals.