Hematite is an iron oxide with a hardness of 5 to 6. Its name is derived from the Greek word for blood, a reference to the color the mineral has in its powdered form. Although crystal forms can occur, it is usually found as massive structures. Hematite is the major mineral in most iron ore deposits and can also occur as inclusions in quartz crystals, displaying its reddish brown color. Hematite is a powerful stone for grounding oneself. It can help one see the silver lining in every dark cloud, and the light at the end of every tunnel.