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    ASSURE Diamond Verification

    • ASSURE Directory of Diamond Verification Instruments
    • ASSURE Testing Program
    • Diamond Pipeline Integrity
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    GemPen

    GemPen

    GemPen® is a handheld diamond verification instrument for loose and mounted stones, designed to separate diamonds from synthetic diamonds. It is suitable for field gemmologists, diamond buyers, wholesalers, and retailers.

    Stone Testing Capability

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

    Instrument Performance

    The below results demonstrate the performance of the GemPen® with the ASSURE Core Sample:

    Diamond False Positive Rate (optimal rate 0%): 15.1%
    Diamond Referral Rate (optimal rate 0%): N/A
    Diamond Accuracy Rate (optimal rate 100%): 98.7%
    Speed (stones tested per hour): 813

    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 GemPen® with the ASSURE Smalls Sample:

    Diamond False Positive Rate (optimal rate 0%): 4.7%
    Diamond Referral Rate (optimal rate 0%): N/A
    Diamond Accuracy Rate (optimal rate 100%): 99.5%
    Speed (stones tested per hour): 813

    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
    Detect or Refer (Diamond Simulants): N/A
    Multiple Stones at Once: Yes
    Training Required: Yes, through an online education platform

    The user manually places stones in a case that function as a darkroom. After GemPen® is turned on and directed towards a gemstone, a fluorescing effect will occur. By manually analysing this effect, with guidance from the GemPen® Diamond Map and online GemPen®, the user can determine if the stone is a natural diamond or a synthetic diamond.

    Instrument Specifications

    Size: 24 cm (L) x 3.6 cm (W) x 3.2 cm (H)
    Weight: 0.4 kg
    Price: 2,300 USD (April 2019)

    Contact information

    gemometrics.com
    info@gemometrics.com
    +46 72 44 99 05060

    ASSURE Tested May 2019
    ASSURE ID: 14933

    Read the Independent Lab Report

    Download Instrument Fact Sheet

    Download This Instruments Safety Testing Credentials

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