Hematite is a mineral made primarily of iron oxide, giving it a metallic luster and a reddish-brown color. It is commonly found in sedimentary rocks and is often used as a source of iron for various industrial applications. Hematite can also be polished into beautiful gemstones, making it popular in jewelry. In addition to its industrial uses, hematite has a rich history in ancient cultures. People have used it for thousands of years, not only for tools and weapons but also for decorative purposes. Its unique color and shine have made it a favorite among collectors and artisans alike.