Both lab and natural diamonds are sent to a gem lab that specializes in grading all kinds of diamonds. Their processes are designed to provide each diamond with an unbiased grade. However, it’s not uncommon for a diamond to get a different grade, not only from a different lab but within the same lab, if sent back for a second grading.
For this reason, there are a lot of differing opinions amongst consumers and diamond retailers as to which lab is the “best.” But it’s important to keep in mind that those opinions are completely subjective. Each lab, much like anything in life, has its pros and cons. When shopping for lab grown diamonds, the best way to ensure a trustworthy grade is to make sure your retailer uses a reputable certification lab.
A diamond retailer, whether for mined or lab grown diamonds, chooses which lab they use because they trust that lab to grade diamonds fairly. If diamond certification is an important factor in your purchase, you should have a candid conversation with your jeweler about which lab they use and why. More than anything, jewelers want you to be confident in your purchase, so don’t be afraid to ask questions in order to find the best lab-created diamonds for your engagement ring or jewelry. This conversation will help ensure you're making the most educated decision about your engagement ring or diamond jewelry purchase.
A diamond is evaluated using the 4c’s: cut, clarity, color, and carat. When grading, they are looking to judge the diamond on how well it has been cut down from the raw form into a jewel, how flawless and clear it is, and its size.
Click the link below, you’ll find an explanation of each of the 4 C's and the different measurements used for each.