Absolutely! Our lab grown diamonds come with certificates from the International Gem Institute (IGI) or the Gem Certification and Assurance Lab (GCAL). Below is a link to an article showing that IGI and GIA are just as strict in their grading:
https://www.dimendscaasi.com/News/NewsItem.aspx?ArticleID=43417
GCAL is a more scientific certificate: https://www.gemfacts.com/