A 10-mile-thick layer of diamond, to be specific. Those patches of graphite I mentioned have led scientists to theorize that in Mercury's early history, it was host to an ocean of molten carbon ...
A layer of diamonds was found beneath Mercury's surface. This could help scientists understand the planet's unusual magnetic field.
Credit: OpenStax, CC By 4.0 While all these dead bacteria are the ultimate source of graphite (not to mention every other carbon mineral, from coal to oil to diamonds), exactly what type of ...
Depending on how big a customer wants their diamond to be, it can take six to eight weeks in an HPHT machine to coax graphite to crystallize into a gem. "The larger the diamond, the longer it ...