HRD Antwerp has developed a compact screening device, “D-screen”, which distinguishes natural from potentially synthetic colourless or near-colourless polished diamonds. For the large majority of near colourless polished diamonds on the market, D-Screen guarantees that the diamond is not-synthetic and not-HPHT treated. For the number of stones that are referred for further examination, an additional investigation in a reliable laboratory is necessary.
For the most part, rough synthetic diamonds can be visually distinguished from their natural counterparts by their external shape. However, this visual identification is no longer possible after the diamond is polished. Even the study of inclusions using a microscope does not provide a conclusive answer.
The production of synthetic diamonds started in the 1950s, and they now comprise over 95% of the industrial diamond market. Synthetic diamonds of gem quality were already present in small quantities on the gem diamond market in the 1970s. It has only been recently that synthetic diamonds have begun to really impact the gem diamond market.
HRD Antwerp has invested significantly in know-how and technology to identify these synthetic stones.
But while a well-equipped grading lab has all the necessary instruments to conclusively identify synthetic diamonds, their sophisticated equipment is not readily available to the individual diamond trader. Therefore, HRD Antwerp developed a compact screening device for traders to use in their office or elsewhere. By screening the diamonds, “D-Screen” can distinguish between natural diamonds and potentially synthetic or treated ones. The instrument tells whether a diamond passes the test or is recommended for further examination in the diamond lab.
NOTE: The “D-screen” is NOT designed for Laboratory work.