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    ASSURE Diamond Verification

    • ASSURE Directory of Diamond Verification Instruments
    • ASSURE Testing Program
    • Diamond Pipeline Integrity
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    The Sherlock Holmes Detector

    The Sherlock Holmes Detector

    The Sherlock Holmes Detector is a portable desktop diamond verification instrument for loose and mounted stones designed to separate diamonds from synthetic diamonds. The Sherlock Holmes Detector is manually operated and requires an operator to interpret the test results.

    Stone Testing Capability

    Weight: All
    Size: All
    Colour: D-K
    Shape: All
    Diamond Simulants: No
    Mounted Stones: Yes (not yet ASSURE Tested)

    Instrument Performance

    The below results demonstrate the performance of the Sherlock Holmes Diamond Detector with the ASSURE Core Sample:

    Diamond False Positive Rate (optimal rate 0%): 0%
    Diamond Referral Rate (optimal rate 0%): N/A
    Diamond Accuracy Rate (optimal rate 100%): 97.5%
    Speed (stones tested per hour): 530

    The ASSURE Core Sample consists of 1,000 loose diamonds, 200 loose synthetic diamonds and 200 loose diamond simulants. The stones are 0.02ct to 0.20ct in D-J colour.

    The below results demonstrate the performance of the Sherlock Holmes Diamond Detector with the ASSURE Smalls Sample:

    Diamond False Positive Rate (optimal rate 0%): 0%
    Diamond Referral Rate (optimal rate 0%): N/A
    Diamond Accuracy Rate (optimal rate 100%): 97.8%
    Speed (stones tested per hour): 530

    The ASSURE Smalls Sample consists of 1,000 loose diamonds, 200 loose synthetic diamonds and 200 loose diamond simulants. The stones are 0.005 ct to 0.02 ct in D-J colour.

    Instrument Capabilities

    Automated Feed: No
    Automated Results: No
    Automated Dispense: No
    Detect or Refer (Synthetic Diamonds): Detect
    Multiple Stones at Once: Yes
    Training Required: No, review user manual

    The Sherlock Holmes Detector captures an image and based on visual analysis of the images, and support from a decision tool, the operator can conclude one of the following results:

    1. Diamond
    2. Synthetic diamond
    3. Refer

    The ‘Refer’ result could contain potential synthetic diamonds and diamonds. Yehuda recommends further testing with regular UV light or by a gemmological laboratory.

    Instrument Specifications

    Size: 15 cm (W) x 24 cm (D) x 15 cm (H)
    Weight: 2.2 kg
    Price: 6,495 USD (February 2019)

    Contact information

    yehuda.com
    dror@yehuda.com
    +1 800 934 8320

    ASSURE Tested March 2019
    ASSURE ID: 5169974

    Read the Independent Lab Report

    Download This Instruments Safety Testing Credentials

    Download Instrument Fact Sheet

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