Uncover the differences between rocks, minerals, and gemstones, discover how they are all formed, and explore examples from each category.

Fancy colored diamonds get their color from three main causes. Impurities, such as other chemical elements, in the diamond crystal structure, are the cause for fancy yellow and orange diamonds, as well as blue, violet, white and black diamonds. Lattice defects in the diamond structure lead to the fancy pink and red diamonds, as well as the fancy brown diamonds and purple diamonds. Radiation leads to the formation of fancy green diamonds. The rarest fancy-colored diamond is th

Diamonds are minerals composed of carbon that come from deep volcanic eruptions in the Earth's mantle and were formed billions of years ago.

The Naica Cave of Crystals, home to giant selenite crystals, is one of the most fascinating, yet potentially deadly, places on Earth.