Yep. I've seen lots of marketing spam on my elevator's "Captivate" box "educating" viewers on colored diamonds and how "natural" impurities make them that way. Very obvious ploy to increase the desirability of mined diamonds.
(I believe I've only seen them in hotels)
First time I saw them I thought it was some kind of dystopian joke.
In this case the market needs the average consumer to buy into that status symbol, and enough of them are price conscious that a cheaper alternative that almost nobody can tell is cheaper is quite a draw.