Hematite
Hematite, a mineral that consists largely of the iron oxide ferric oxide, commonly is used in the production of iron. It is a dense and heavy substance, and the uses of hematite in consumer items are plentiful. When carved, hematite is shiny and comes in many colors, making jewelry design one of the popular uses of hematite. If hematite is crushed, then it can be used to color paint. Similar to paint dye, hematite also can be used to color fabrics
Another name for hematite is iron oxide, because the chemical makeup of hematite includes both iron and oxygen. When iron is extracted from hematite for industrial purposes, metallurgists remove oxygen from the hematite until only iron is left. While iron can always be mined by itself, this gives industrial worker more iron overall to work with, and it keeps miners from having to mine excessive amounts of cleaner iron. Most iron also is combined with another substance, as in hematite, so this is very natural and expected by metallurgists.