AMS2 - For both CVD & HPHT synthetics

The new AMS2 instrument represents a significant technological step forward as it is faster and lower cost than the previous generation device. It also deals with fancy cuts and a smaller minimum size of diamond. It is the first of our second generation of verfication devices.
The instrument is the product of De Beers’ depth of experience and insight into diamond science and is just one of the many innovations that IIDGR has developed to support confidence in the sector.


Dedicated to Diamonds

Our Mission is to provide a premium grading service and equipment unique to the diamond industry. The International Institute of Diamond Grading & Research (IIDGR) is part of De Beers group of companies, and ensures exceptional accuracy and outstanding knowledge.

The Science of Diamonds

With our heritage comes expertise, and with our expertise comes knowledge. We apply the collective knowledge from our 125 years of experience to stay at the forefront of diamond research so that our instruments and techniques are always the industrys finest.

A Distinctive Heritage

Drawing on the De Beers Group of Companies 125 years of experience in the industry, the International Institute of Diamond Grading & Research (IIDGR) strives to apply every part of our expertise to every diamond which comes through our laboratories.

The 5th C


We only grade and inscribe naturally occurring diamonds using our ground breaking proprietary technology bringing diamond grading into the 21st century. The International Institute of Diamond Grading & Research (IIDGR) is proud to pioneer accurate and consistent grading in all our global laboratories.


Market Leading Instruments

The International Institute of Diamond Grading & Research offer detection instruments that can readily screen out simulants, synthetics and treated diamonds.

“Venus Jewel is proud to offer diamonds which are IIDGR certified. A ground breaking and consistent grading service offered by the De Beers Group of Companies”

Venus Jewel

“First Class Grading Service”

Michael Rawlinson - CEO National Association of Jewellers

“World class grading service reinforcing confidence in the UK diamond industry”

Victoria McKay - COO London Diamond Bourse

“Best in the business”

Lucy Reece-Raybold - Executive Director of Business Development Company of Master Jewellers


Market leading technology pioneering support for integrity in the diamond industry. Click below to find out more about the instruments we offer.

Front-end screening

Automated Melee Screening (AMS2)

Spectrometer based system for automatically screening melee for potential synthetics and simulants.

Front-end screening


Compact screening device designed to determine natural diamonds.

Front-end screening


Quickly analyses parcels to determine whether they contain potential HPHT synthetics.