De Beers has developed a proprietary process of protection for you and your diamond. All diamonds above 0.20 carat that pass our stringent criteria are microscopically branded with the De Beers Marque.
Completely invisible to the naked eye, this microscopic inscription is made using the De Beers Group’s advanced proprietary technology. The Marque ensures that each diamond will retain its identity as an official De Beers diamond as it passes from generation to generation, or in case its original setting is changed. This process does not in any way affect the diamond’s carat weight, colour or clarity grading.
The diamond is then catalogued in the De Beers Diamond Registry, providing an additional level of protection and security.