DiamondBuzz
De Beers adjusts sight boxes, support for small diamonds
De Beers, has made important changes to how it packages and sells rough diamonds. These changes are designed to help deal with problems in the market for smaller diamonds.The company has moved 8-grainer diamonds (which weigh about 2 carats) from one group to another. Previously, these 2-carat diamonds were sold together with other diamonds weighing between 2 and 4 carats. Now, De Beers will sell these 2-carat stones alongside smaller diamonds that weigh between 1 and 1.5 carats.
This might seem like a small change, but it’s actually quite significant for the diamond industry. The way diamonds are grouped and sold affects their prices and who buys them.
Sight holders, believe De Beers made this change because smaller diamonds have been struggling in the market. When diamonds don’t sell well, it creates problems for everyone involved – from miners to jewelry stores.By moving the 2-carat diamonds into a different group, De Beers is trying to make these packages more attractive to buyers. This could help improve sales and support the overall market for smaller rough diamonds.
DiamondBuzz
Rio Tinto’s Diamond Division Posts $79 Million EBITDA Loss in 2025
Higher output from Canada’s Diavik Diamond Mine offsets revenue decline, but end-of-life pressures continue to weigh on performance.
Rio Tinto reported a challenging year for its diamond business in 2025, posting an underlying EBITDA loss of $79 million despite improved revenues. While the loss narrowed compared to the $115 million deficit recorded in 2024, the division remained under pressure amid a global diamond market slowdown and the nearing closure of its last active mine.
Annual revenue rose 19% to $332 million, supported by stronger production at the Diavik mine in Canada, Rio Tinto’s only remaining diamond operation. Output climbed 61% to 4.4 million carats, driven by the ramp-up of mining activities in the underground section of the A21 deposit, which began scaling up in late 2024.
However, the A21 underground ore body is expected to be depleted by the end of the first quarter of 2026, marking the end of Diavik’s operational life. The company plans to spend approximately $1 billion this year on closure activities related to Diavik, as well as rehabilitation work at the former Argyle Diamond Mine, which ceased production in 2020, and other non-diamond projects.
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