Diamonds can really be 'forever' if imbued with nuclear waste to create electricity
(Image by Univ of Bristol) Permission Details DMCA
'Diamond-age' of power generation as nuclear batteries developed New technology has been developed that uses nuclear waste to generate electricity in a nuclear-powered battery. A team of physicists and chemists from the University of Bristol has found a way to convert nuclear waste into man-made diamond batteries that can generate a small electric current for longer than the entire history of human civilization.
Nextbigfuture has a more detailed article here. Read especially the comments by GoatGuy, who claims the power output is minimal.