With the rising prevalence of synthetic diamonds, the ability to separate lab grown from natural diamonds with absolute certainty has become more and more important to jewelers and customers.  The enhanced user interface of the Yehuda Sherlock 4.0 is so simple to use—just one click to see test results in seconds with no calibration or need to change platforms and even more exciting, it works with your own mobile phone!  All results are automatically uploaded to the cloud. Additionally, you can add lab reports, appraisals, your customer’s name & photo, SKU#, barcode, & any number of files or data to the test upload.  Store all the test results from multiple Yehuda detectors under one account. You can easily download the App from the App Store/Google Play for a $10 monthly subscription fee per account (include any number of detectors).   Made in Israel


  • Testing area of approximately 4 x 6 inches by 2 inches high (Easily tests large pieces of jewelry like bangles, bracelets & more)
  • Testing tray holds 27 rings
  • Rotating finger holders allow testing of up to 20 rings at a time on all sides
  • Loose diamond testing area of approximately 4 x 6 inches (250cts)


  • 4 Loose Stone Trays: 2 Open (1.5”x2.5” & 4”x5”) and 2 Grid (1.5”x2.5” & 4”x5”)
  • 2 Magnetic Finger Ring Holders
  • 27-Ring Display Tray (Slotted)
  • Lab Grown Diamond Sample Stone
  • 110/220V Power Supply with Global Adapters
  • 2 USB Cables (iPhone & Android)

The ASSURE Instrument Testing Program is an ongoing initiative of the Natural Diamond Council (formerly Diamond Producers Association). They used an independent 3rd party, Underwriters Laboratories (UL), to Impartially test and verify the effectiveness of all the CVD/HPHT detection devices that were submitted for a comprehensive review.

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