Originally Posted by GQgeek
Even the yellow cultured ones that gemisis makes are quite expensive. I'm not sure if anyone is making the clear ones yet. I'd love to see links.
Expensive, yes, but not as expensive as a natural yellow diamond. According to a quick google search a 0.96 round in fancy yellow of SI1 quality can hit ~$9600. Same thing in lab runs ~$2600 according to a quick google (not gemesis, though).
Chatham is apparently making them in yellow, blue, and pink, but no clear. And they only go as high as VS1, even though Apollo Diamond regularly makes absolutely flawless colorless diamonds in insanely large sizes. I think in June or July of this year Apollo Diamond started making gem grade diamonds, though.
DeBeers can be thanked for a lot of this, both on the social side of propaganda about "fake" diamonds, and suing, purchasing and liquidating companies, and apparently (hearsay) even trying to have a scientist killed. It threatens their monopoly (which is why they can't legally do business in the US), so they try to kill it.