It is an open-pit mine, formed around a rare volcanic rock formation called a kimberlite pipe, which contains high ...

It's an open-pit mine, formed around a kimberlite pipe, a rare type of volcanic rock formation that can contain high ...

Large crystals found in geodes and other rocks are relatively rare. Pink ChalcedonyA pink chalcedony ... many quite beautiful, but diamonds, rubies, sapphires, and emeralds continue to qualify ...

The group used a multi-pronged approach involving “bulk rock” geochemistry ... The post Hunting for the Birthplace of the World’s Rarest Diamonds appeared first on Explorersweb.

Until now, the hardest diamonds have been found in asteroid and meteoroid impact craters, meaning they are rare and often very small. Most natural and synthetic diamonds have a cubic structure ...

About 90 percent of the world's diamonds are cut and polished in India. But the companies processing them rely on Russia for their raw gems, and the knock-on effect of the war in Ukraine is ...