Not all of them, lab grown diamonds may have inclusions similar to pure diamonds. They can be graded on the exact same clarity scale as organic diamonds. Grades starting from Flawless to SI2 can be found on scarce https://qasimkbko377525.designertoblog.com/58760715/how-much-you-need-to-expect-you-ll-pay-for-a-good-3-carat-lab-grown-diamond-price