J-Certain by Massive Tech Lab
J-Certain is a desktop diamond verification instrument for loose and mounted Diamonds. J-Certain is designed to separate synthetic diamonds from diamonds. J-Certain is manually operated but gives an automatic test result. J-Certain is suitable for an environment where you need to test both mounted and loose diamonds e.g. dealers, diamond and jewellery manufacturers, retailers, buyers and gemmological laboratories. ASSURE ID: 94666.
Size: 43 cm (W) x 34 cm (D) x 52 cm (H)
Weight: 22 kg
Price: 13,999 USD (May 2019)
What Stones Can Be Tested?
Weight of stones: 0.002 ct-10 ct
Size of stones: 1mm+
Colour of stones: D-Z
Shape of stones: All
Diamond simulants: No
Capabilities according to Massive Tech Lab
Automatically feed the stones? No
Automatically interpret the results? No
Automatically dispense the stones? No
Detect or refer synthetic diamonds? Detect
Multiple stones at one time? Yes
Training? Yes, review of user manual and operation video is sufficient
How Does it Operate?
The user manually places the loose or mounted stones inside the specially designed test chamber of the instrument for different shapes of jewellery. To start the testing, the user closes the test chamber and press the start button.
J-Certain automatically makes a measurement and displays one of the following results:
- ‘Synthetic diamond’
- ‘Check with fluorescent light’
J-Certain was tested in accordance with the Diamond Verification Instrument Standard with the test protocol for instruments that separate diamonds from synthetic diamonds (Operation Category 1).
The tests took place at the independent laboratory UL in Canton, Massachusetts, United States.The tests were performed by a novice operator. J-Certain was tested with the ASSURE Core Sample and ASSURE Smalls Sample.
The UL test summary report can be found here.
ASSURE Core Sample
The ASSURE Core Sample consists of 1,000 diamonds and 200 synthetic diamonds. The stones are 0.02 ct to 0.20 ct in D-J colour. The below results are from the test with the ASSURE Core Sample.
|Diamond False Positive Rate||Ratio of synthetic diamonds incorrectly classified as ‘diamond’ to the total number of synthetic diamonds||19.6%|
|Diamond Referral Rate||Ratio of diamonds being referred for further testing to the total number of diamonds||0.2%|
|Diamond Accuracy||Ratio of diamonds correctly classified as 'diamond' to the total number of diamonds||99.7%|
|Speed||Stones tested per hour||792|
ASSURE Smalls Sample
The ASSURE Smalls Sample consists of 1,000 diamonds and 200 synthetic diamonds. The stones are 0.005 ct to 0.02 ct in D-J colour. The below results are from the test with the ASSURE Smalls Sample.
|Diamond False Positive Rate||Ratio of synthetic diamonds incorrectly classified as ‘diamond’ to the total number of synthetic diamonds||5.8%|
|Diamond Referral Rate||Ratio of diamonds being referred for further testing to the total number of diamonds||0.3%|
|Diamond Accuracy||Ratio of diamonds correctly classified as 'diamond' to the total number of diamonds||99.3%|
|Speed||Stones tested per hour||792|
Where Do I purchase the Instrument?
Phone: +91 9769972575
The most important requirement when selecting a Diamond Verification Instrument is that the instrument meets the safety regulations of your local jurisdiction. Before purchasing an instrument, request that the manufacturer verifies that their instrument complies with all regulatory requirements.
Click here to download the safety testing credential for J-Certain submitted by Massive Tech Lab. Please note that the safety testing credentials have not been validated through the ASSURE Program.