Assure Directory

DiamondDect 3 by Taidiam Technology

Instrument Description

DiamondDect 3 is a portable desktop diamond verification instrument for mounted and loose stones. DiamondDect 3 is designed to separate diamonds from synthetic diamonds. DiamondDect 3 is manually operated but gives an automatic test result. DiamondDect 3 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.

Instrument Specs

Size: 22 cm (W) x 20 cm (D) x 12 cm (H)

Weight: 3 kg

Price: 5,730 USD (February 2019)

View Instrument Details

What Stones Can Be Tested?

Weight of stones: 0.005 ct-10 ct

Size of stones: 1 mm-10 mm

Colour of stones: D-J

Shape of stones: All

Diamond simulants: No

Jewellery: Yes


Capabilities according to Taidiam Technology

Instrument Functionality

Automatically feed the stones? No

Automatically interpret the results? Yes

Automatically dispense the stones? No

Detect or refer synthetic diamonds? Detect

Multiple stones at one time? No

Training? No

How Does it Operate?

The instrument tests individual loose and mounted stones and automatically displays a test result. The user manually places the loose stone onto the testing area or direct the measurement probe onto the table of the mounted stone and the instrument automatically makes a measurement and displays a result.


The DiamondDect 3 displays one of the following results:

  1. ‘Natural’
  2. ‘CVD Synthetic’
  3. ‘Abnormal’


The ‘abnormal’ results could contain potential synthetic diamonds and diamonds. These referrals shall be tested further for full verification. Taidiam recommends further testing by a gemmological laboratory.


DiamondDect 3 need to be recalibrated before usage or after it has been moved.

What are the Performance Test Results?

DiamondDect 3 was tested in accordance with the Diamond Verification Instrument Standard with the test protocol for instruments that separate diamonds from synthetic diamonds (Operating Category 1).


The tests took place at the independent laboratory UL in Canton, Massachusetts, United States.


DiamondDect was tested with the ASSURE Core Sample that 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.


The tests were performed by a novice operator.


The summary test report issued by UL can be found here.


Diamond False Positive Rate Ratio of synthetic diamonds incorrectly classified as 'diamond' to the total number of synthetic diamonds 0%
Diamond Referral Rate Ratio of diamonds being referred for further testing to the total number of diamonds 0.6%
Diamond Accuracy Ratio of diamonds correctly classified as diamonds to the total number of diamonds 96.4%
Speed Stones tested per hour 289
Synthetic Diamond False Positive Rate Ratio of diamonds incorrectly classified as 'synthetic diamond' to the total number of diamonds 3%
Where Do I purchase the Instrument?

Website: http://www.taidiam.com/

Email: yuanjoechihchun@gmail.com

Phone: +86 371 66869111

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 DiamondDect 3 submitted by Taidiam. Please note that the safety testing credentials have not been validated through the ASSURE Program.