International News
Gemfields Generates $4.8 Million from Mini-Auction of Higher-Quality Emeralds
Mini-auction of unsold emeralds from November 2024 shows a promising rise in demand and prices, with 77% of lots sold.
Gemfields has reported strong results from its mini-auction held from February 19 to 21, 2025, featuring higher-quality emeralds that had remained unsold during its November 2024 auction. The event raised $4.8 million in revenue, signaling a notable recovery in demand and pricing within the emerald market.
Auction Performance:
- Total revenue: $4.8 million
- Lots sold: 10 out of 13 (77%)
- Carats sold: 45,864 out of 59,192 (77%)
- Average price per carat: $105.49
Adrian Banks, Managing Director of Product & Sales at Gemfields, highlighted that the auction offered a valuable opportunity to assess current market trends. “This auction exclusively featured unsold lots from Kagem’s November 2024 higher-quality emerald auction. With the same schedules in place, we could directly compare demand and pricing, and it was encouraging to see a notable increase in bids. Despite a subdued market sentiment, the rise in demand and pricing is a positive sign for the sector,” said Banks.
The emeralds sold were mined at the Kagem mine in Zambia, where Gemfields holds a 75% stake, while the Industrial Development Corporation of Zambia owns the remaining 25%. Proceeds from the auction will be fully repatriated to Kagem, with royalties paid to the Government of Zambia based on the final sales prices.
With positive market signs emerging, Gemfields remains optimistic about the upcoming trade shows in Bangkok and Hong Kong, anticipating further recovery in the emerald market.
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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