Over time it makes its way back to the surface via volcanic activity. This slurp-down, spew-out cycle is known as the deep ...

People have always been obsessed with diamonds with many on the quest to find the biggest and most valuable. This fascination is thousands of years old with our ancestors believing that precious ...

Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered ...