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  • Russian diamond miner ALROSA reported the company’s diamond production equaled 32.4 million carats in 2021. They sold 45.5 million carats with proceeds equaling $4.2 billion, $4 billion from rough and $200 million from polished diamond sales. Gem-quality diamonds accounted for 67% of total sales. In 2021, revenue per carat for these gem-quality diamonds equaled $128, a year-on-year increase of 17%.