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Assure Directory

Gemlogis VISTA by Gemlogis

Instrument Description

The Gemlogis VISTA is a portable diamond verification instrument for loose and mounted diamonds. The VISTA is designed to separate natural diamonds from synthetic diamonds. The VISTA is manually operated and gives an automatic test result. The VISTA is suitable for an environment where you need to test both loose and mounted stones, including closed backs; e.g. dealers, diamond and jewellery manufacturers, retailers, buyers and gemmological laboratories. ASSURE ID: 94513.

 

Instrument Specs

Size: 4.1 cm (W) x 9.8 cm (D) x 11 cm (H)

Weight: 0.3 kg

Price: 599 USD (August 2019)

View Instrument Details

What Stones Can Be Tested?

Weight of stones: 0.02 ct -12 ct

Size of stones: 1.5 mm-15.3 mm

Colour of stones: D-J

Shape of stones: All

Diamond simulants: No

Jewellery: Yes; closed and open back mountings (please note this has not yet been tested by the ASSURE Program)

 

Capabilities according to Gemlogis

Instrument Functionality

Automatically feed the stones? No

Automatically interpret the results? Yes

Automatically dispense the stones? No

Detect or refer synthetic diamonds? Refer

Multiple stones at one time? No

Training? No

 

How Does it Operate?

To test loose stones, use one hand to push down the latch to separate the test probe from the platform. While holding down the latch, rotate the test platform to select a suitable slot to place the stone. Place the stone into the slot and slowly release the latch to allow the probe to contact the table of the stone. Close the lid and press the POWER/TEST button to begin testing.

 

To test mounted jewelry, use one hand to push down the latch to separate the test probe from the platform. Place the mounted jewelry with the other hand onto the test platform. Slowly release the latch to allow the probe to contact the table of the mounted stone. Close the lid and press the POWER/TEST button to begin testing.

 

The VISTA makes a measurement and displays one of the following results:

 

  1. Natural Diamond
  2. Type II Diamond

 

ASSURE Test

The Gemlogis VISTA Natural Diamond Segregator 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 Gemlogis VISTA does not require manual interpretation and the instrument was tested with a novice operator. The detailed test results can be found in the summary report issued by UL. The VISTA was tested with the ASSURE Core 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 loose diamonds, 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 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 7.5%
Diamond Accuracy Rate Ratio of diamonds correctly classified as ‘diamond’ to the total number of diamonds 92.5%
Synthetic Diamond Referral Rate Ratio of synthetic diamond referred for further testing to the total number of synthetic diamonds 100%
Speed Stones tested per hour 212
Where Do I purchase the Instrument?

Website: http://www.gemlogisusa.com/gemlogis-vista.html

Email: dana@gemlogisusa.com

Phone: +1 800 833 1090

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 the Gemlogis VISTA submitted by Gemlogis. Please note that the safety testing credentials have not been validated through the ASSURE Program.