Auction Results: Commercial-Quality Emeralds

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("Gemfields" or the "Group" or the "Company")

Auction Results: Commercial-Quality Emeralds

LONDON, 05 DECEMBER 2025

Gemfields announces the results of an auction comprised of commercial-quality rough emeralds held during the period 17 November - 4 December 2025.

Highlights: December 2025 Commercial-Quality Emerald Auction

• Total auction revenues of USD 25.4 million
• 46 lots were offered for sale and 45 were sold (98%)
• Average price of USD 7.46 per carat
• The 53 auctions of Kagem gemstones held since July 2009 have generated USD 1.147 billion in total revenues

Adrian Banks, Gemfields' Managing Director of Product & Sales, commented:

"Today's auction results mark a successful conclusion to a challenging year for Kagem. Following the temporary suspension of mining operations during the first half, the business has nonetheless delivered a strong performance for 2025, culminating in this auction's solid contribution to USD 79 million of total Kagem auction revenues for 2025.

The firm pricing seen across all quality categories demonstrates that the pressures experienced at the end of 2024 and early 2025 have largely subsided. Market sentiment has strengthened and the sustained demand observed since the third quarter of 2025 continues to underpin robust performance.

We extend our appreciation to the Kagem team for their continued hard work and extend our thanks also to the Industrial Development Corporation of Zambia, Kagem's 25% shareholder."

The auction lots were made available for private, in-person viewings by customers in Jaipur, India. Following the viewings, the auctions took place via an online auction platform specifically adapted for Gemfields and which permits customers from multiple jurisdictions to participate in a sealed-bid process.

The rough emeralds sold were extracted by Kagem (which is 75% owned by Gemfields and 25% by the Industrial Development Corporation of Zambia). The proceeds of this auction will be fully repatriated to Kagem in Zambia with all royalties due to the Government of the Republic of Zambia being paid on the full sales prices achieved at the auction.

The results of the five most recent commercial-quality Kagem auctions are summarised in the table below (and earlier results are available at www.gemfieldsgroup.com):