A certificate from either of these laboratories will tell you most of what you need to know about the diamond. It will not only inform you of the color and clarity of the diamond, but will also include a plot showing you where the inclusions are, as well as detailed information about the cut and proportions of the diamond.
It is important that you buy a diamond with good proportions, as that is what guarantees maximum beauty and brilliance. We also recommend that you take any certified diamond you buy to an independent appraiser to verify that the diamond you buy matches the certificate. Many of the diamonds we sell now have their certificate numbers laser inscribed. This enables you to have peace of mind knowing that the diamond you are buying matches the certificate, and that when you ever take your diamond to be cleaned or repaired, it cannot be switched.