Extra-hard hexagonal diamonds can now be grown in a lab

image via New Scientist

July 30, 2025, 4:00 PM

• •Scientists have successfully synthesized hexagonal diamonds in the lab.
• •Hexagonal diamonds are up to 60% stronger than normal diamonds.
• •These diamonds could be used for super-tough cutting and drilling tools.
• •The synthesis process involves specific high-pressure and temperature conditions.

Researchers have successfully synthesized hexagonal diamonds, a form of diamond predicted to be significantly tougher than regular diamonds. This new material was created under specific high-pressure and high-temperature conditions in the lab. Preliminary tests show that it could be up to 60% harder than normal diamonds. The potential applications of this new material include creating more durable tools for industrial uses, such as drilling.

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