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Scientists Briefly Created A Rare Diamond To Test Its Hardness. The Stiffness Of The Artificial Hexagonal Diamond, Lonsdaleite, Suggest It Is 58% Stronger Than Diamond, Setting A New Record For The Hardest Known Material. Advances Are Needed To Stabilize The Production Of Lonsdaleite, Also Found In Meteorite Crater Rocks, For Its Uses.

Scientists Create Crystal Stronger Than Diamond

https://www.forbes.com/sites/davidbressan/2021/03/31/scientists-create-crystal-stronger-than-diamond/?sh=204bae0f3d89

First direct measurements suggest that lonsdaleite, also called hexagonal diamond, is the strongest and hardest mineral found in nature.