The process to grow diamonds in a laboratory is very similar to the geological growth process. In other words, diamonds are grown above the Earth by recreating the conditions below the Earth where carbon crystallizes into diamond. Thus, the same types of inclusions and imperfections present in mined diamonds can also occur in lab diamonds.
Lab diamonds are graded on the exact same criteria (the 4Cs) by the exact same independent gemological laboratories that also grade mined diamonds. Thus you can rest assured that if you purchase a lab diamond from a reputable retailer such as Ada Diamonds, you have independent non-profit verification of the quality of the diamond you purchase.