I just sent a link to the article to the managers of all our pawn shops. Could be we'll get down to treating diamonds just like we do sapphires and rubies--as a pretty stone with no value whatsoever (since differentiating between real and synthetic is more trouble than it's worth).
Not too much trouble identifying synthetic colored stones, most of the time it's the color that's a dead give away, no warmth. Under a microscope you will see striations (small lines) in the stone as well as other imperfections in a natural stone. If I have any question they go to a gemologist for inspection.