Three detectors conclusively identified all lab-grown diamonds in a recent study, Rapaport News reports.
A collaboration by the Diamond Producers Association and Signet Jewelers – the Assure Program – published the results from the independent performance tests of Diamond Verification Instruments in the Assure Directory on diamondproducers.com/ASSURE.
One of the machines identifying all lab-grown diamonds was the Sherlock Holmes machine by Yehuda, which sells for about $6,500.
The De Beers DiamondView identified 100 percent of lab-grown diamonds. It sells for about $35,000.
The Presidium Synthetic Diamond Screener II identied all lab-grown diamonds. But the machine, which sells for $600, had a false-positive rate of nearly 16 percent. It “works by screening out type IIa colorless diamonds, as those are likely to be synthetic, rather than actually identifying lab-growns,” according to Rapaport.
The sample was described as “deliberately challenging.”
Several other models referred all lab-grown diamonds for additional testing, Rapaport explains. This group, which is not designed to detected lab-growns conclusively, included:
- De Beers’ SYNTHdetect ($17,000).
- De Beers’ DiamondSure ($18,200).
- Gemological Institute of America’s iD100 ($4,995).
- HRD Antwerp’s M-Screen+ ($63,000).
Through the Assure Directory, trade participants can access objective and third-party-verified information on the relative performance of Diamond Verification Instruments and guidance on how to ensure that their business is protected from undisclosed laboratory-grown diamonds.
Visit the ASSURE Directory on diamondproducers.com/ASSURE to learn more about the test results and to download guidelines on how to ensure pipeline integrity.
Read more at Rapaport News