Lynette Gould said the cuts at De Beers UK, which include Forevermark, the Diamond Trading Co. and De Beers Group functions, impact about 100 positions and are a mix of voluntary severances and layoffs.

It is part of the company's efforts to "move our cost base to a level that reflects the current economic climate," she said.

Details of the cuts first surfaced in December, when De Beers began a 90-day operational review at its London headquarters to determine where cuts could be made. At the time, it was unknown what percentage of the workforce would be lost or what departments would be impacted.