Copper heavy Crystals like Malachite are thought to be beneficial, You may have seen copper jewelry , bangles mostly , worn by people who suffer from arthritis and rheumatism. though scientists have disclaimed the beneficial properties of Copper in this respect, It does not seem to stop people using them, Magnetic therapy has also been widely used so hematite might be another avenue of action worth perusing.

One medical practice I heared of was Gold injections, so perhaps Gold Jewelery may also help if you can tolerate it close to your skin as I know of people for whom Gold irritates the skin and causes a rash.