Formed millions to billions of years ago, diamonds can shine light into the darkest and oldest parts of the Earth's mantle. The analysis of ancient, superdeep diamonds dug up from mines in Brazil and ...

The Okavango Blue Diamond, a dazzling 20.46-carat stone, is more than just a beautiful jewel-it's practically a miracle of ...

The stone, unearthed at the Karowe mine in northeastern Botswana, is now under study by the Gemological Institute of America (GIA). Their researchers believe the diamond likely formed in two distinct ...

The intense heat and pressure at the Earth's core, deep beneath the surface, is enough to make diamonds out of carbon, scientists say. Researchers from Arizona State University's School of Earth and ...

Buying a diamond is an emotional moment. Whether it’s for an engagement ring, a Diwali gift, or simply a treat-yourself purchase, that sparkling stone holds meaning far beyond its carats. But here’s ...

Researchers have discovered a pattern where diamonds explode from deep beneath the Earth’s surface in huge, volcanic “fountains.” Diamonds form approximately 90 miles deep in the Earth’s crust and are ...