Diamond – Natural, Faceted, Colorless

Antique and heirloom diamonds may not have grade reports — or at least not one you can find! If you're paying for it, it's good to send it to a lab to make sure it's genuine and to get an idea of its value. "Old Diamond Ring," photo by Ed Ivanushkin. Licensed under CC By-SA 2.0.

Article: Diamond Certification FAQ

Credit: Ed Ivanushkin