Would you buy these diamonds?

There seems to be a growing phenomenem. It's lab "grown" diamonds that are even fooling experts as to if they are real or not because they're also made with carbon like the real ones. The ones in a lab take just hours versus years from the ground. Because they are made in a lab, they can control how many flaws or lack thereof that a diamond has. They are currently running about 15% less in price than normal ones. If only 1 out of 5 experts can currently tell which is real and which is fake, would YOU buy one of these for your special someone and not tell them? Would you even buy one in the first place?