Sure but knowing that De Beers artificially inflates the price and that the "natural" diamond market is a major driver of bloodshed and slavery I'd hope that "natural diamonds" are eventually as frowned upon in polite society as "real fur" already is.
I feel like if we're going "good, fuck De Beers" but still going "finally I can buy a less expensive ring for my finance" we're still in a very narrow set of railroad tracks created by De Beers.