No-bling ring
The Hitachi engineer behind this is obviously not looking to impress Japan's future fiancés or its burgeoning gangsta rap community, since he's manufactured the least blinging diamond ring in the world. The micro diamond ring has a diameter of just 0.02 mm is topped with a diamond that's a mere 5 billionths of a carat in size. You're probably wondering why someone would make this, and maybe Hitachi is secretly wondering the exact same thing, but the ring is made with semiconductor technology and is supposedly meant as proof that the company can manufacture micro machines. Or maybe they're planning to marry off some of their nanobots.
