Hopefully the process is more environmentally friendly too.
They are real diamonds.
I find it hi-goddamned-larious that the moment these became viable, the industry switched from "Diamond purity is the be-all and end-all and you must have the clearest, most pure" to "Oh, well of course it's all about having the right impurities to increase sparkle and character, lab-grown diamonds don't have character"
Just like with sapphires, if we're not there already I'm sure it won't be long before exactly the right type and number of impurities or faults can be introduced to mimic any natural diamond.