A diamond can be made in two ways: in the Earth, and in a lab. If you take the Earth route to get yourself a natural stone, you have millions of years to wait as the Earth crushes the future-diamond with enough force and heat to eventually create that familiar sparkly rock.
A diamond made in a lab, on the other hand, will take about three months. Oh, and you can totally skip over the whole mining thing when you want to actually retrieve it. For all the work and trouble, the natural stone must be better, right? Not so fast. Natural diamonds are physically and chemically identical to synthetic ones grown in a lab. Lab-grown stones are 25-40 percent cheaper too. High five, scientists!