The Sherlock Holmes Detector by Yehuda

Instrument Description

The Sherlock Holmes Detector is a portable desktop diamond verification instrument for loose and mounted stones. The Sherlock Holmes Detector is designed to separate diamonds from synthetic diamonds. The Sherlock Holmes Detector is manually operated and requires an operator to interpret the test results. The Sherlock Holmes Detector is suitable for an environment where you need to test both mounted and loose diamonds e.g. dealers, diamond and jewellery manufacturers, retailers, pawnbrokers, buyers and gemological laboratories. ASSURE ID: 5169974.

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Instrument Specs

Size: 15 cm (W) x 24 cm (D) x 15 cm (H)

Weight: 2.2 kg

Price: £6,495 

What Stones Can Be Tested?

Weight of stones: All

Size of stones: All

Colour of stones: D-K

The shape of stones: All

Diamond simulants: No

Jewellery: Yes

Capabilities according to Yehuda

Instrument Functionality

Automatically feed the stones? No

Automatically interpret the results? No

Automatically dispense the stones? No

Does detector refer to synthetic diamonds? Detect

Multiple stones at one time? Yes

Training? No, review of the user manual

How Does it Operate?

The user manually places the loose or mounted stones onto a tray that is placed inside the instrument. To start the testing, the user closes the test chamber and press start. The Sherlock Holmes Detector captures an image and based on visual analysis of the images, and support from a decision tool, the operator concludes the nature of the stones.

The following results can be concluded by the operator based on the data generated by the Sherlock Holmes Detector:

1. Diamond
2. Synthetic diamond
3. Refer

The ‘Refer’ result could contain potential synthetic diamonds and diamonds. Yehuda recommends further testing with regular UV light or by a gemological laboratory.

ASSURE Test

The Sherlock Holmes Detector was tested in accordance with the Diamond Verification Instrument Standard with the test protocol for instruments that separate diamonds and synthetic diamonds (Operation Category 1).

The tests took place at the independent laboratory UL in Canton, Massachusetts, United States. Sherlock Holmes requires manual interpretation and the instrument was tested both with a novice and a manufacturer appointed expert. The manufacturer appointed an expert from UL’s team. 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. Sherlock Holmes was tested with the ASSURE Core Sample and ASSURE Smalls Sample.

The UL test report including more detailed test results 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.

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.