The word "Hematite" comes from the Greek word "Halima," meaning blood. Hematite is mostly black, silver gray and dark brown red, polished surface will emit a metallic luster, this is because it is the strongest refractive index of all gemstones, so the jewelry market someone to "black diamond" to call hematite, usually single crystal hematite is more diamond shape, and flake aggregate hematite will be arranged like blooming roses, Hence the name "Iron Rose".
