Introducing the AMS2

The AMS2 is faster than its predecessor and has a reduced referral rate, as well as having the ability to process smaller sizes and all shapes of polished diamond.

The AMS2 carries a lower price tag than the first generation AMS instrument and has no annual fee.

For more information please email:

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 the 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 Compay 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)

Automatically screens melee for potential synthetics and simulants using a revolutionary measurement technique.

Front-end screening


Compact screening device designed to determine natural diamonds.

Front-end screening


Quickly analyses parcels to determine whether they contain HPHT treatments.