the searing temperatures – you’d think similar conditions would be needed for any synthetic gemstone. Apparently not, though, as [NightHawkInLight] reveals his trivially easy method for making ...

In their project, reported in the journal Nature Materials, the group developed a process that involves heating and compressing graphite to create synthetic diamonds. Diamonds are a prized gem the ...

Here's a look at how synthetic gems are made — and how they compare to those culled from the ground. Video/Illustration: Heather Seidel/The Wall Street Journal ...