Hematite: is the mineral form of Iron(III) Oxide (Fe2O3), one of several iron oxides. It is a very common mineral, colored black to steel or silver-gray, brown to reddish brown, or red. It is mined as the main ore of iron. Hematite is also referred to as "Kidney Stone" because of it's rust red color when ground into a powder or scratched onto a surface. The name Hematite is derived from the Greek word for blood (haima). Hematite in its natural form is soft and brittle and is between 5-6 on the Moh’s scale of hardness. Black Hematite has a silvery-gray luster while other forms, such as Tiger Iron, have alternating bands of silver and black Hematite mixed with Red Jasper, Chert or even Tigereye Quartz. Good specimens of Hematite come from England, Mexico, Brazil, Australia and the Lake Superior region of the United States and Canada. However, most of the silvery-black Hematite sold on the jewelry market today is a reconstituted form that is made by grinding up Hematite, adding a binder and then press-molding or carving it. Sometimes called "Hemalyke" or "Hematine", it is identical to Hematite in appearance and weight, except more stable and wearer friendly.