Naturally Magnetic Lodestone (Magnetite), Rocks & Minerals: Educational Innovations, Inc.
Principle Navigation - "LODESTONE" Lodestone, is a naturally magnetized piece of the mineral magnetite. They are naturally-occurring magnets, which can attract iron. The property of magnetism was first discovered in antiquity through
Lodestone hi-res stock photography and images - Alamy
Amazon.com: Naturally Magnetic Lodestone 4 Pieces - Includes Velvet Storage Bag : Home & Kitchen