Diamonds form deep within the Earth's mantle, around 250 kilometers below the surface, where immense pressure (up to 10 GPa) and temperatures (around 2,200 °C) compress carbon into diamonds over ...

Diamonds have been revered as precious stones in different human cultures throughout history. Their uniqueness in appearance, durability, and seeming timelessness amplified their value in society.

Forbes contributors publish independent expert analyses and insights. Specialist in global markets, economics and alternative investments. Investors are grappling with unprecedented uncertainty due to ...