June
28
/ 2020
Discovered at the Premier No.2 mine in Cullinan, South Africa, on January 26, 1905, the famous “Cullinan diamond” is the largest gem-quality diamond ever found. Weighing an incredible 3,106.75 carats, this monstrous and deeply-ancient stone was eventually cut into smaller stones, the largest of which were set into the crown jewels of Britain. Now a team of US researchers have probed the ancient origins of a series of large gem diamonds, similar to the Cullinan, discovering that they form “super deep” in the earth’s mantle. Studying the Origins of the Rarest Objects on Earth Diamonds form under extremely high pressures within the middle layer of the earth's mantle, between the surface crust and the central core. While most diamonds form
