A Chinese research team has produced bulk hexagonal diamond, a crystal structure long theorized to be harder than ...

In brief: Chinese researchers have developed a synthetic diamond that is significantly harder and more resilient than those that occur naturally here on Earth. If commercially viable, the new diamond ...

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After decades of debate, researchers say that they have found the clearest evidence yet for this rare form of carbon ...

Researchers made small, pure samples of the elusive mineral lonsdaleite – also known as hexagonal diamond — and tested its material properties to show it's harder than diamond.

The size of the global diamond industry is projected to reach nearly $140 billion by 2030, and it's easy to see why: the gemstones are sold for thousands of dollars each and remain a common purchase ...

BEIJING (Reuters) -China on Thursday announced export curbs on some types of artificial diamonds set to take effect just before the U.S.-China tariff truce is scheduled to end, further tightening ...