Bismuth

You have probably seen samples of bismuth if you have ever visited a gem and mineral show. It produces brightly colored metallic crystalline structures that resemble an oil slick. The name of some over-the-counter medicines, such as Pepto Bismol, may also be familiar to you. The prefix "bis" refers to bismuth.

The intriguing manner that bismuth interacts with magnets is less well understood. You are aware that iron is a magnetic metal and that a magnet will adhere to it easily. Opposite of that is bismuth. Although it is diamagnetic, this does not imply that it is not magnetic.

Instead of having no reaction like copper might, it repels magnets by producing an opposing magnetic field. A magnet will truly levitate if two pieces of bismuth are placed together with one magnet in the middle. If you ever want to try it out, it's a very cool phenomena and makes for a fun party trick.