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Assure Directory

QChKAdC by Arotek/GII

Instrument Description

QChKAdC is a desktop diamond verification instrument for loose and mounted diamonds. QChKAdCis designed to separate natural diamonds from synthetic diamonds. QChKAdC is manually operated and requires an operator to interpret the test results. QChKAdC 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: 48396

Instrument Specs

Size: 35.5 cm (W) x 43 cm (D) x 49 cm (H)

Weight: 14.5 kg

Price: 7,700 USD excl. laptop (September 2019)

What Stones Can Be Tested?

Weight of stones: 0.003 ct– 0.2 ct

Size of stones: 0.86 mm-3.7 mm

Colour of stones: D-J

Shape of stones: All

Diamond simulants: No

Jewellery: Yes (please note this has not yet been tested by the ASSURE Program)

 

Capabilities according to Arotek/GII

 

Instrument Functionality

Automatically feed the stones? No

Automatically interpret the results? No

Automatically dispense the stones? No

Detect or refer synthetic diamonds? Detect

Detect or refer diamond simulants? Refer

Multiple stones at one time? Yes

Training? Yes

 

How Does it Operate?

After loading the sample in the aluminium plate supplied, the sample is exposed to deep UV and its phosphorescence and fluorescence are monitored in the windows. The Phosphorescence of some of the synthetic diamonds can be enhanced when the sample is kept at slightly higher temperature (approximately 60-70 degrees C) which can be easily executed by placing the sample loaded metal plate on a vessel (similar to a wide mouth tea cup) containing hot water.

 

QChKAdC makes a measurement and displays one of the following results:

 

  1. ‘Fl Image’(Fluorescence)
  2. ‘P Image’ (Phosphorescence)

 

From the observations and inference regarding Natural/Synthetic is by manual interpretation of the colour of Fluorescence and phosphorescence. This is summarised in the Instruction manual supplied.

 

ASSURE Test

QChKAdC 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.

 

QChKAdC requires manual interpretation and the instrument was tested both with a novice and a manufacturer appointed expert. The manufacturer appointed an expert from GII. The below results are from the expert tests. Both the novice and the expert test results can be found in the summary report issued by UL.

 

The UL test report including more detailed test results can be found here.

 


ASSURE Core Sample

The ASSURE Core Sample consists of 1,000 loose diamonds and 200 loose 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 and diamond simulants incorrectly classified as 'diamond' to the total number of synthetic diamonds and diamond simulants 11.1%
Diamond Referral Rate Ratio of diamonds being referred for further testing to the total number of diamonds n/a
Diamond Accuracy Ratio of diamonds correctly classified as 'diamond' to the total number of diamonds 94.2%
Speed Stones tested per hour 731
ASSURE Smalls Sample

The ASSURE Smalls Sample consists of 1,000 loose diamonds and 200 loose 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 and diamond simulants incorrectly classified as 'diamond' to the total number of synthetic diamonds and diamond simulants 3.7%
Diamond Referral Rate Ratio of diamonds being referred for further testing to the total number of diamonds n/a
Diamond Accuracy Ratio of diamonds correctly classified as 'diamond' to the total number of diamonds 88.6%
Speed Stones tested per hour 731
Where Do I purchase the Instrument?

Website: http://www.quickcheck.co.in/

Email: enquiry@arotek-inst.com

Phone: +9122 25301119

Safety Testing

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 QChKAdC submitted by Arotek/GII. Please note that the safety testing credentials have not been validated through the ASSURE Program.