Buying diamonds from Stuller ensures your brand is trusted and free from potential undisclosed synthetic diamonds.  We steadily seek new ways to bring our customers only the best.  We back up this statement by using the most advanced diamond screening processes.  Stuller was one of the first companies in the U.S. to install and utilize the De Beers Automated Melee screening device.  Designed to detect all synthetics and simulants, the device verifies the integrity of natural melee diamonds.  It loads up to 500 carats of round brilliant cut diamonds at a time, with a testing rate of around 360 stones per hour.  Stuller also uses PhosView, a self-contained screening device that allows parcels of polished diamonds to be quickly analyzed. The portable D-screen machine from HRD Laboratories in Belgium can test for synthetics and color-enhanced diamonds in seconds.    The Presidium synthetic diamond screener identifies type 2A colorless diamonds.  It can screen diamonds loose or mounted in an open-back head.  The automated diamond process station uses a robotic arm to help assure accuracy and consistency.  Stuller requires all of its suppliers loose diamonds and diamond set jewelry to assure that they are not supplying us with synthetics.  By incorporating these protocols, Stuller provides integrity, confidence, and security for our customers.  Your brand is important to us and we know you hold your products to a high standard.  As a leading supplier to jewelers, we also sell tools that allow you to test your own diamonds. Learn more about our screening process by visiting Stuller.com/AboutDiamonds.