What's the verdict guys? On one hand diamonds are mined by enslaved kids in Africa, at least according to that DiCaprio movie. Girls love it. The diamond I mean, but most likely DiCaprio too. They're expensive and yet so common. Whereas moissanite is less costly, has the same physical properties as diamonds. No shady business model and they are so rare on earth (found on meteorites) that they need to be synthesized in labs.