An international research team has produced a bulk, millimeter-scale hexagonal diamond in the laboratory, a crystal variant long theorized to rival or exceed the hardness of the cubic diamonds found ...

Researchers have produced nearly pure hexagonal diamond, a material long theorized to be harder than conventional diamond, by ...

Add Yahoo as a preferred source to see more of our stories on Google. Kwangmoozaa via Shutterstock You don't need a diamond detective to keep you from getting scammed at the jewelry counter. If you're ...

Determining the authenticity of a diamond requires professional equipment and a highly trained eye. At-home tests do exist—from the fog test to the water-drop test—but the only way to be sure is by ...