The world of diamonds is highly regulated with numerous rules, grading scales, and different classifications that go far beyond what can be seen with the naked eye. These regulations help diamond experts and customers tell the difference between something that is internally flawless, very good, very slightly blemished, or even poorly cut and suffering from too many blemishes to be a worthy investment. Here is a guide to the 4Cs of diamond grading. Hopefully, it will help you find the perfect diamond for your diamond engagement ring or another piece of important jewelry!