Well, the one difference is that they're completely indistinguishable to the naked eye, so even if you're entirely driven by vanity, you could just buy a synthetic diamond (or Moissanite) and let people think it's a massive natural diamond.
That said, I suspect I'm not the only one who thinks synthetic is cooler than natural.
That said, I suspect I'm not the only one who thinks synthetic is cooler than natural.
https://www.youtube.com/watch?v=fR38h4xPfVo#t=1m10s