Hard Stuff: Cooked diamonds don't dent: Science News Online, Feb. 28, 2004

Hard Stuff: Cooked diamonds don't dent: Science News Online, Feb. 28, 2004: "Popping diamonds into a high-pressure oven for a few minutes can render the famously hard minerals even harder, researchers have found. In particular, pressure-cooking a recently developed type of synthetic diamond has yielded the hardest single-crystal diamond material ever tested, claims Russell J. Hemley of the Carnegie Institution of Washington (D.C.). Single-crystal diamond has a consistent geometric order of atoms throughout, making it desirable for uses ranging from jewelry to electronics."