Hematite is an iron oxide and an important ore of iron. Its hardness is 5 to 6.
Its name is derived from Greek word for blood, a reference to the colour of this mineral in powdered form. Compact crystalline varieties, called specular iron, were once ground into highly polished flat pieces displaying black metallic luster and used by the Aztecs as mirrors.
Hematite is the most effective of all stones for grounding oneself in the body and the physical world. It can counteract spaciness and confusion, helping one to see practical concerns and move forward with useful action. Hematite, as the pre-eminent grounding stone, is an ideal tool in this work.
Hematite can be used to balance the auric field and align the chakras. It pulls stray energies down through the meridian system to the root chakra. Manifestation is one of the most commons problems for spiritually oriented people. Many do not realize that it is not enough to travel to the higher realms and experience expanded awareness. One goal, perhaps the primary one, of human evolution, is to bring the energies of the etheric realms into manifestation here in the physical plane. Hematite, as the pre-eminent grounding stone, is an ideal tool in this work. On the everyday level, carrying or wearing a Hematite can assist one in bringing one’s dreams and aspirations into reality and in learning the difference between a true vision and a fantasy.
Simmons, Robert; Ahsian, Naisha. The Book of Stones, Revised Edition: Who They Are and What They Teach (several pages). North Atlantic Books. Kindle Edition.