Scientists created hexagonal diamond harder than regular diamond by squeezing and heating graphite under extreme conditions.

Natural diamond, seen here, has a cubic packing structure. But a much rarer form of diamond has hexagonal packing and has now ...

The brilliantly shiny diamond is more than just pretty; it's one of the hardest minerals on Earth, with a name derived from ...

The new lab-grown hexagonal diamond, created by compressing graphite at unprecedented pressures before heating it to 1,800 K (1,527 °C or 2,780 °F), has now set a new benchmark.

This “super diamond” structure, according to scientists, exhibits high thermal stability “up to 1,100C and a very high hardness of 155 Giga Pascals (GPa).” In comparison, natural diamonds have a ...

Volt Carbon produced a graphite concentrate blend specifically developed for diamond synthesis. Using the high pressure-high temperature (HPHT) method, this graphite was converted into synthetic ...

This “super diamond” structure, according to scientists, exhibits high thermal stability “up to 1,100C and a very high hardness of 155 Giga Pascals (GPa).” ...

The material’s high thermal stability and hardness “suggest its great potential for industrial applications”, scientists wrote in the study. They say the findings also provide a framework for graphite ...