De Beers has cut diamond prices by more than 10% across the board as the world’s biggest producer abandons attempts to put a floor under the slumping market.

De Beers, the world's largest diamond producer, has taken the unprecedented step of slashing prices by 10% to 15% at its final sale of the year, signaling a significant shift in strategy as the diamond market grapples with one of its deepest slumps in decades.

Despite the challenging conditions, De Beers is aiming for annual core profits of $1.5 billion by 2028. Last year, however, it earned just $72 million — far below its historical range of $500 million to $1.5 billion, which the miner attributed to the diamond industry’s cyclical nature.

Paul Zimnisky, independent diamond industry analyst, says there are many reasons why the company that controls the global diamond trade might be lowering their prices across the board right now.

De Beers diamond unit said Monday it is cutting prices by more than 10% across the board, as the world's biggest producer abandoned attempts to put a floor under one of the weakest markets in decades.

Jewelers know how difficult it has become to sell diamonds in a tough market but that’s a modest challenge compared with selling the world's premier diamond business.

De Beers has reportedly lowered rough prices at its current sight in Gaborone, by as much as 15 per cent in some cases. It generally uses price cuts only as a last resort, and prefers to offer sight holders the right to refuse or sell back part of their allocation.