Forevermark saw impressive growth in 2014, it announced, as the De Beers brand appeared in 20 percent more stores and racked up reported worldwide retail sales of $750 million.
The brand credited the results to increased demand in the United States, India, and China.
It is also expanding into Botswana and Turkey, launching with partner Zen Diamond.
Its Middle East partner Damas also opened a new store in Saudi Arabia that sells Forevermark.
Grading and inscriptions at its lab, the Forevermark Diamond Institute, increased by a significant 67 percent and 47 percent year on year, it announced.