Hong Kong headuartered Diamond Services has introduced a new device at its laboratories to improve detection of rough and polished synthetic diamonds in the lower yellowish-to-light-brown colour ranges.

The DND (Diamond Natural Device), as the system is known, is the first to provide detection in this range, Diamond Services said. It has been developed by the Company’s own research and development team. The DND also provides detection solutions in the colourless to near-colourless range of diamonds.

DND scans diamonds at the temperature of liquid nitrogen, which the company has shown provides a higher degree of accuracy than detection devices which examine diamonds at room temperatures.

"To provide as accurate results as possible, we insist that all diamonds being tested to detect the possible presence of synthetically-produced goods be examined at temperatures in a liquid nitrogen atmosphere," explained Joseph Kuzi, Diamond Services' founder and president. "Since this can only be done reliably and safely in a proper laboratory setting, we have selected not to sell the equipment we develop, but rather to use it exclusively as part of the service we provide the trade. The new DND system improves that offering, widening the range of goods that can be screened to include all goods at the lower end of the standard colour range."

The DND system is capable of scanning loose diamonds and diamonds set in jewellery, in large quantities and with no size limitations, in short periods of time.

Diamond Services, which has been offering synthetic screening services since 2015, first in Hong Kong and then in the United States, has, since the start of this month, also begun providing services to Indian jewellery companies from a new location in the SEEPZ industrial zone in Mumbai.