De Beers reduced prices for smaller rough diamonds at this week’s sight, though manufacturers say the adjustments aren’t enough to ease their profitability challenges. The miner cut the price of 3-grainer (0.75-carat) and smaller goods by 4% to 6%, market insiders told Rapaport News Tuesday. In 4- to 6-grainers (1 to 1.5 carats), the price decline was around 4%, they estimated. Prices of 5- to 10-carat rough increased slightly, though this partly reflected modifications to the assortments,
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