Many of our larger stoned engagement rings come with a gemmological certificate and, if so, you will see a PDF version attached to the product page. The majority of our engagement rings do not have accompanying certificates as they contain smaller stones which we feel do not warrant a report. Also, in order to accurately grade diamonds they need to be removed from their settings and reset again, which we feel is unnecessary. However, we are happy to arrange for an engagement ring certificate, should you require one.