The sparkle of a diamond hides an extraordinary journey from the depths of the Earth, a voyage that science is only beginning ...

Diamond, with its tough-to-break carbon lattice of interlocking cubes, is traditionally considered the hardest material on Earth. Yet a rare form of diamond known as lonsdaleite—a crystal with carbon ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In 2008, pieces of diamond encased in rock descended from space and landed in the Nubian Desert ...

Almost 100 million years ago, in what is now Pike County, nature created one of the world's most unusual diamond-bearing formations, the big volcanic "pipe" that now serves as the centerpiece of ...