Uncovering North America's largest diamond
Media playback is unsupported on your device
Video

Uncovering the secrets of North America's largest diamond

Africa is home to the world’s largest diamonds - but advances in mining technology are enabling other regions of the world to get in on the act.

Most recently, Canada unearthed the biggest diamond ever found in North America - the Foxfire.

It has spent the last couple of months on display at the Smithsonian’s National Museum of Natural History in Washington.

The BBC's Jane O’Brien went to see it.

  • 27 Jan 2017
Go to next video: A record breaking space suit