Scheelite is a mineral composed of calcium tungstate, often found in metamorphic and igneous rocks. It typically appears as a white, yellow, or blue-green crystal and is known for its distinctive fluorescence under ultraviolet light, glowing bright blue. Scheelite is an important ore of tungsten, a metal used in various applications, including light bulb filaments and cutting tools. This mineral is commonly located in regions with high geological activity, such as China, Portugal, and Austria. Mining and processing scheelite can yield tungsten, which is essential for many industrial processes. Its unique properties make it valuable not only for its tungsten content but also for collectors and researchers.