AMS device ready for De Beers Group Sightholders


Machine screens colourless diamonds from 0.20cts down to 0.01ct.

The International Institute of Diamond Grading & Research (IIDGR) has announced that its Automated Melee Screening (AMS) instrument is being dispatched to Sightholders at The De Beers Group of Companies across the globe.

The first installation and training sessions successfully took place at the end of June, and now IIDGR president Jonathan Kendall is happy to dispatch the device on a much wider scale.

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Focus has now shifted to installing the AMS in Sightholder facilities across key diamond trading hubs such as Antwerp, Mumbai, Hong Kong and Tel Aviv.

This is a phased roll out with IIDGR technicians working in parallel in different locations to ensure timely yet comprehensive installation and training.

The AMS instrument is the result of years of development, testing and production. Measuring approximately 42cm deep, 26cm in width, 23cm high, the AMS device screens near-colourless and colourless round brilliant diamonds from 0.20cts down to 0.01ct (roughly 1.4mm diameter) to determine whether they are natural or not.Each instrument is controlled by a compact computer which is supplied with the machine.

Unlike the Gemmological Institute of America’s (GIA) DiamondCheck device, the AMS instrument does not screen for treated natural diamonds.

However, the AMS will take up to 500cts at any one time compared to the one-by-one screening method required by DiamondCheck.

For enquiries regarding the AMS instrument or DiamondSure, DiamondView or DiamondPLus, please email:

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