Adia Diamonds (among others) is offering to the public completely lab-made, but even more flawless than mined, real diamonds. These diamonds weren't made by environment trashing strip-mining, or the exploitation of poor Africans. And since they were made in a lab, they're guaranteed not to have been "conflict diamonds", often used to finance civil wars and terrorism in the third world. And did I mention that you can get them for a fraction of the cost of a mined diamond, even though they're bigger and have fewer flaws?
It's going to be very interesting to see how the major diamond cartel, DeBeers, tries to tackle this one. They have a long history of media manipulation and market monopoly maintenance. We'll see if people are stupid enough to swallow the DeBeers marketing and continue paying way more money for diamonds that are smaller, have more flaws, and don't let you select exactly the color that you want...