Natural diamond prices drop to a 20-year low due to cheap lab stones

Natural diamond wholesale prices have dropped to their lowest point in more than twenty years, sitting roughly thirty to forty per cent lower than their peak values in the year 2021. This sharp fall is driven by lower buyer demand, too much supply in the market, and heavy competition from lab-grown stones. Right now, retail prices for a standard one-carat natural round diamond stay between three thousand five hundred thirty and three thousand eight hundred sixty dollars. Lab-grown diamonds have turned into a major threat for traditional natural stones. Even though they share the exact same chemical makeup as natural diamonds, synthetic versions cost seventy to eighty-five per cent less. Wholesale prices for synthetic diamonds have crashed by more than seventy-five per cent since 2022, based on data from a TradingView report.

Market Shifts And China's Role

Since March 2025, lab-grown diamond prices fell by twenty-nine point nine per cent, while normal diamonds of the same quality only dropped about four per cent. China plays a massive role in this shift, making more than sixty per cent of all synthetic diamonds in the world. Chinese exports of these lab stones grew by sixty-five point three per cent compared to the previous year during the first half of 2026, putting even more pressure on a weak market. This flood of cheap stones hurts mid-tier natural diamonds because they target the same group of buyers. On the other hand, bigger and better-quality natural diamonds hold their high prices much better because they are truly rare. The drop in demand also hurts mining operations. Debswana, a partnership between De Beers and the government of Botswana, saw a big drop in sales. Diamond mining forms a crucial part of the economy in Botswana.

Market Realities

Some people compare diamonds to Bitcoin, but the comparison does not work well because diamonds are not all identical. The price of a one-carat diamond changes a lot based on its cut, colour, clarity, and internal flaws. Bitcoin works differently because every single coin is identical to another, and the total supply stops at twenty-one million coins. New technology lets factories make identical stones in large amounts, which changes how people view diamond scarcity and hurts the value of regular stones. Even though top-tier natural diamonds keep their high value due to rarity, they only make up a tiny part of total sales. Because factories keep expanding output, especially in China, prices across the whole industry will likely face ongoing pressure.