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Here’s How Lab-Grown Diamond Detectors Stacked Up in Recent Testing

The sample was ‘deliberately challenging.’




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

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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 to learn more about the test results and to download guidelines on how to ensure pipeline integrity.

Read more at Rapaport News



When There’s No Succession Plan, Call Wilkerson

Bob Wesley, owner of Robert C. Wesley Jewelers in Scottsdale, Ariz., was a third-generation jeweler. When it was time to enjoy life on the other side of the counter, he weighed his options. His lease was nearing renewal time and with no succession plan, he decided it was time to call Wilkerson. There was plenty of inventory to sell and at first, says Wesley, he thought he might try to manage a sale himself. But he’s glad he didn’t. “There’s no way I could have done this as well as Wilkerson,” he says. Wilkerson took responsibility for the entire event, with every detail — from advertising to accounting — done, dusted and managed by the Wilkerson team. “It’s the complete package,” he says of the Wilkerson method of helping jewelers to easily go on to the next phase of their lives. “There’s no way any retailer can duplicate what they’ve done.”

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