By subjecting graphite to extreme pressure and heat, researchers synthesized a rare hexagonal diamond, also known as lonsdaleite—a crystal structure that has long been theorized to be stronger ...

Chinese scientists synthesized an artificial "super diamond" that is 40% harder and far more durable than natural diamonds.

However, researchers say, the applications of such a hexagonal diamond (HD), known as lonsdaleite, have been “largely unexplored” due to the low purity and minuscule size of most samples obtained.