JTR REVEAL Diamond Detector 2S

The JTR REVEAL Diamond Detector 2S is a portable desktop diamond verification instrument for loose and mounted stones designed to separate natural diamonds from synthetic diamonds. The Reveal 2S is manually operated and requires the user to interpret color images of the stones under fluorescence and phosphorescence. Images are displayed on a connected monitor, tablet or smartphone (not included). The REVEAL 2S comes with large capacity analysis area of 68mm x 80mm and comes with trays for both loose and mounted stones.

Download Instrument Fact Sheet (ASSURE 2.0 - Novice Operator)

Instrument Performance

Key performance metrics measured for the REVEAL 2S with the ASSURE 2.0 Primary Loose Stone Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 5.6%
Diamond Accuracy Rate (optimal rate 100%): 94.4%

The Primary Loose Stone Sample was tested three times and consists of 350 loose diamonds, and 100 loose synthetic diamonds. The stones are 0.03 ct to 0.20 ct in D-J colour.

Key performance metrics measured for the REVEAL 2S with the ASSURE 2.0 Smalls Loose Stone Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 6.2%
Diamond Accuracy Rate (optimal rate 100%): 93.8%

The Smalls Loose Stone Sample was tested three times and consists of 350 loose diamonds, and 100 loose synthetic diamonds. The stones are 0.005 ct to 0.02 ct in D-J colour.

The measured test speed for the REVEAL 2S was 421 stones per hour.

Key performance metrics measured for the REVEAL 2S with the ASSURE 2.0 Primary Mounted Stone Sample:

Diamond False Positive Rate (optimal rate 0%): 0%
Diamond Referral Rate (optimal rate 0%): 4.2%
Diamond Accuracy Rate (optimal rate 100%): 95.8%

The Primary Mounted Stone Sample consists of jewelry pieces with open-back settings containing a total of 303 stones. The stones are a mix of diamonds, laboratory grown diamonds and diamond simulants in the D-J colour range and have a minimum girdle diameter of 2.0 mm.

Instrument Capabilities

Automated Feed: No
Automated Results: Semi-automatic
Automated Dispense: No
Detect or Refer (Synthetic Diamonds): Refer
Detect or Refer (Diamond Simulants): N/A
Multiple Stones at Once: Yes
Training Required: Yes

The JTR REVEAL Diamond Detector 2S provides four views of the diamonds on the tray; i)Day light, ii) Fluorescence, iii) Phosphorescence, and iv) Result. The Result view will automatically identify some of the synthetic diamonds with a red dot. The remaining stones need to be visually interpreted by the operator based on the color characteristics of the stones under Fluorescence and Phosphorescence. An interpretation key with reference colors is provided on the monitor to assist with identification. Based on the images, the operator can conclude one of the following results:
i) Diamond
ii) Refer

When placing the loose stones on the tray, the culet was oriented in the up position. For jewelry testing, care was taken to orient the stones at a common height above the tray in order to achieve the sharpest possible focus.

Contact information

USA          +1 (917) 268-4747 (JTR New York Office)
USA          +1 (800) 877-7777 (STULLER)
Turkiye +90 (850) 217 38 66 (JTR Istanbul Office)
UK            +44 (0)20 7404 5762 (Euro Findings)
China       +86 13585717282 (JTR Shenzhen Office)
India         +91 77770 55667 (Mehta Tools)

ASSURE Tested April 2025