Colorado Diamonds says a 16-carat!!! diamond was discovered at the Kelsey Lake mine... the only operating diamond mine in North America. That would be the largest of its kind on the continent.
Animation of the crystal structure of diamond, a form of the element carbon. Atoms of carbon are black, and the bonds between them grey. Diamond is the hardest naturally occurring mineral known, due to its regular and tightly bound structure. Each atom is bonded tetrahedrally to four others. This animation loops from frame 325 to 375. The HD master is flattened onto a white background, as seen in this preview. For a version supplied with an image mask, see clip number K003/3953.