Here's why:

* Iron: Hematite is primarily composed of iron oxide (Fe2O3).

* Metallic Luster: Hematite can have a metallic luster, especially in its denser, crystalline forms.

* Hard: Hematite is relatively hard, with a Mohs hardness of 5.5-6.5.

* Same Color Streak: Hematite's streak is a reddish-brown color, which matches its color in many forms.

Other minerals that contain iron and have a metallic luster include magnetite and pyrite. However, their streaks differ from their color. Magnetite has a black streak, and pyrite has a greenish-black streak.