For an additional $80 US dollars you can purchase a gemological laboratory certification.

The document states the carat weight, shape, measurements, clarity, color, fluorescence, and provides a photo of the stone taken under magnification. Sending a ring in for certification will add 2-3 weeks onto the processing time if the certificate is not already included with your purchase. If a certificate is already paired with a ring, the listing description for that item will include a sentence stating that the diamond or stone comes with a certificate.