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