J-Certain is a desktop diamond verification instrument for loose and mounted diamonds, designed to separate diamonds from synthetic diamonds. J-Certain is manually operated but gives an automatic test result.
The performance metrics shown below are based on testing done in 2019 using the ASSURE 1.0 test standard and sample sets. The J-Certain has not been tested under ASSURE 2.0.
Weight: 0.002 ct-10 ct
Size: 1mm+
Colour: D-Z
Shape: All
Diamond Simulants: No
Mounted Stones: Yes (not yet ASSURE Tested)
The below results demonstrate the performance of the J-Certain with the ASSURE 1.0 Core Sample:
Diamond False Positive Rate (optimal rate 0%): 19.6%
Diamond Referral Rate (optimal rate 0%): 0.2%
Diamond Accuracy Rate (optimal rate 100%): 99.7%
Speed (stones tested per hour): 792
The ASSURE 1.0 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 J-Certain with the ASSURE 1.0 Smalls Sample:
Diamond False Positive Rate (optimal rate 0%): 5.8%
Diamond Referral Rate (optimal rate 0%): 0.3%
Diamond Accuracy Rate (optimal rate 100%): 99.3%
Speed (stones tested per hour): 792
The ASSURE 1.0 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.
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, review of user manual and operation video
J-Certain automatically makes a measurement and displays one of the following results:
Size: 43 cm (W) x 34 cm (D) x 52 cm (H)
Weight: 22 kg
Price: 13,999 USD (May 2019)
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