Titanite, also known as sphene, is a mineral primarily composed of calcium, titanium, and silicon. It typically forms in igneous and metamorphic rocks and is recognized for its distinctive yellow, green, or brown colors. Titanite is valued for its high refractive index, which gives it a brilliant luster, making it a popular choice among gem enthusiasts. In addition to its aesthetic appeal, 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 can also be used in various industrial applications, including ceramics and electronics.