A set of three calcite carving two kitties and one bunny

UV light-reactive calcite is a fascinating mineral that glows in bright colors—often shades of red, pink, orange, or blue—under ultraviolet (UV) light. This fluorescence occurs because of impurities or structural features within the calcite that react to UV light, causing the mineral to emit visible light in vibrant colors. Calcite specimens, particularly those from specific regions (like Franklin, New Jersey, and certain parts of Mexico), are well-known for this effect. Collectors prize UV-reactive calcite not only for its unique glow but also for its beauty under natural light. Displaying it with a UV lamp can create a dramatic visual effect, making it a favorite for mineral enthusiasts and collectors.