Titanite, also known as sphene, is a mineral primarily composed of calcium, titanium, and silicon. It typically forms in metamorphic and igneous rocks and is known for its distinctive green, yellow, or brown colors. Titanite is valued for its high refractive index and strong dispersion, making it an attractive gemstone. In addition to its aesthetic qualities, titanite is an important mineral in geology. It often contains trace elements that can provide insights into the conditions under which the host rock formed. Titanite is also used in various industrial applications, including ceramics and as a source of titanium.