Tests were conducted as part of the ASSURE-program led by the Diamond Producers Association (DPA), an alliance between ALROSA, De Beers, Rio Tinto, among others. In the smalls sample testing, GemPen® could identify natural diamonds with 99.5 percent accuracy and synthetic diamonds with 95.3 percent accuracy.
The results show that an affordable and fully portable instrument can provide reliable test results; this is useful for jewellers, auction house gemmologists and diamond traders who need to make quick decisions on-the-go. DPA is the ultimate independent validator in the industry and we are proud to be an official ASSURE-partner, says Peter Larsson CEO of Gemometrics, the Swedish producer of GemPen® Diamond Screener.
The ASSURE-directory provides the means for professionals in the diamond industry to objectively compare the performance between different diamond verification instruments. The ASSURE-tested mark* guarantees that performance scores are genuine and that the instruments have been independently tested in accordance with the Diamond Instrument Verification Standard at the third-party laboratory UL.
To see full test results please visit the Diamond Producers Association website
To see ASSURE directory visit
To see a GemPen® video tutorial visit
*GemPen® Diamond Screener 2.0 ASSURE test-number is 14933 and date of test report is 31st of May 2019.
Peter Larsson, CEO Gemometrics
Phone: +46 72 560 48 88
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Gemometrics, Timmermansgatan 22, Shopping Galleria, Luleå, Norrbotten 972 31, Sverige