Falling prices, synthetic stones... Are diamonds still forever?

Rapaport is an essential institution in the world of diamonds . Every week, this organization founded by Martin Rapaport in 1978 publishes tables listing the prices of cut white diamonds, according to the 4Cs, that is to say their weight ( carats ), their color ( color ), their purity ( clarity ), and their size ( cut ) because their value varies greatly according to these criteria. Available by subscription, these columns of figures are the bible of all professionals who scrutinize them religiously every Friday to understand the state of the market.

Rapaport also regularly publishes analytical summaries of its surveys. One of its most recent releases, at the end of May, highlighted a price drop of up to 20% in one year (May 2024-May 2025) for one-carat stones, and wrote in particular that " the industry is navigating a context of unprecedented uncertainty due to the continuation of tariff negotiations between the United States, the largest consumer of diamonds…