20mm - Magnetic Hematite starts out as the natural or raw form of hematite. This raw form is made up of Iron Oxide that contains small amounts of titanium and can be found in black, gray to silver gray, brown to reddish brown or red. Natural hematite becomes magnetic hematite by creating a composite of the natural hematite, magnetite and small amounts of other minerals such as copper, titanium and aluminum. 

This composite material is then heated, blended together, and pressed into the desired shape (pendants, beads, etc). Once they have cooled, the finished shape is re-heated inside an external electromagnetic field to give it a permanent magnetism. (Natural hematite cannot be permanently magnetized.)