Pink diamonds, as well as the world's largest diamond mine, may have formed during the breakup of a supercontinent known as Nuna, claims a newly published article in the scientific journal ...

Pink diamonds are extremely rare and coveted. But a discovery made in Western Australia near a now-closed mine may help reveal new deposits of the jewels, researchers say.

Diamonds aren't always colorless; they can also be blue, yellow, green and even pink. But what makes these jewels come in varied hues? After forming, diamonds need to rise to the surface very ...

The rarest variety of jade comes in greens and purples and is a highly-prized gemstone in China. It is said that the Olmecs, ...