1/Sourcing and Sorting

Every Forevermark diamond’s journey begins at a carefully selected mine in countries such as South Africa, Botswana, Namibia and Canada.


Forevermark diamonds are mined from deep below the earth’s surface and from the ocean floor. Some are even sourced from beneath an Arctic lake.  Each mine must meet exigent business, social and environmental standards that go beyond the Kimberley Process and must pass rigorous third-party auditing.

The De Beers Group of Companies makes lasting contributions to the mining communities through educational, medical and social initiatives and through actions taken to redress the environmental impact of mining. For more details, explore our Responsibly Sourced section.


Drawing on vast experience, diamond sorters masterfully assess the distinct natural characteristics of each rough diamond – colour, size and shape – to ascertain those of potential Forevermark quality. 

Sorting takes great skill and years of training. Each Forevermark diamond is entirely unique, so each time a diamond is assessed, an entirely new combination of characteristics must be evaluated.

2/Cutting & Polishing

At each Forevermark Diamantaire, master craftsmen begin the careful process of cutting and polishing the diamonds they believe will meet Forevermark’s strict quality standards. These skilled artisans unleash the brilliance, fire and scintillation of every diamond, creating a unique masterpiece in every one. Experience, time and patience are essential. As each and every facet is carefully exacted, even one mistake could reduce the diamond’s light and beauty. 

Once the diamond has been polished precisely, it is evaluated against a set of stringent Forevermark standards to determine whether it can be submitted for review by Forevermark.

3/ Selection & Grading

After an eligible diamond is cut and polished it is sent to the Forevermark Diamond Institute, with locations in Antwerp, Belgium, Maidenhead, UK and Surat, India.

At the Forevermark Diamond Institute, our experts draw on proprietary, state-of-the-art technologies and years of experience to examine each diamond, going beyond the technical 4C’s criteria to hand-select only the most beautiful to become Forevermark.

A diamond will go through, at minimum, a seventeen-step process here, being rigorously examined by diamond experts for any flaws or imperfections that will impact its beauty. The diamonds are also scanned by proprietary machines to check for their authenticity, carat weight and symmetry, and then hand examined for colour categorisation and inclusions, or flaws visible to the naked eye.

A Forevermark diamond must be completely natural, and must have close to a perfectly polished table, where the inscription is placed. Of all the diamonds in the world, less than 1% qualify to become Forevermark diamonds. The end result is that Forevermark diamonds are the world’s most carefully selected diamonds.

4/ Inscription

Once a diamond’s provenance and quality have been confirmed, it is inscribed with a unique number that represents our promise: that the diamond is beautiful, rare and responsibly sourced. Only then does it become a Forevermark diamond.

The Inscription

Invisible to the naked eye, the Forevermark inscription includes the Forevermark icon and a unique number. The inscription is 1/20th of a micron deep – 1/5,000th the depth of a human hair – and is placed on the table facet of the diamond, using confidential, proprietary technology. It does not affect the internal quality of the diamond. Smaller diamonds, those of less than 14 points, cannot accommodate the inscription, and therefore are not inscribed by Forevermark. The inscription can only be seen with a Forevermark Viewer, which offers superb magnification and clarity.

 With its unique inscription, each Forevermark diamond is as special as the promise made when it is given or received. The inscription also allows each Forevermark diamond to be registered in your name, confirming it as uniquely yours.

The Forevermark Promise

Beautiful, rare and responsibly sourced, each Forevermark diamond carries a promise of its own, making it a powerful symbol of your most meaningful promises.