Gemfields unveils new Ruby finds ahead of June 2025 auction

In a striking move that reinforces its legacy as a leader in the coloured gemstone world, Gemfields has announced a game-changing update to its upcoming ruby auction slated for June 2025. For the first time, buyers will witness a broader offering of secondary-type material sourced from a newer section of Gemfields’ Mozambican mine, an area that, until now, remained a hidden treasure chest within the sprawling 34,966-hectare Montepuez Ruby Mining (MRM) concession.

Among the stars of the show? A show-stopping 36-carat ruby, marking a monumental moment for both collectors and connoisseurs. These newly unearthed rubies bring with them a noticeable shift in tone and glow. Thanks to a lower iron content, the gems boast a lighter hue and a striking fluorescence, adding a fresh palette of colour for jewellers, designers, and high-end houses seeking to diversify their ruby repertoire. It’s a significant departure from the deeper-toned secondary rubies that Gemfields has consistently delivered over the past decade.

Situated in the Montepuez district of Mozambique’s Cabo Delgado province, MRM is co-owned by Gemfields (75%) and local partner Mwiriti Limitada (25%). The area itself sits atop one of the most important ruby discoveries of recent times, and Gemfields has steadily cemented its reputation for reliable, transparent, and ethical gemstone mining. Through its structured auction platform, with 100% of proceeds repatriated to Mozambique, the brand not only ensures traceability and confidence for international buyers, but also delivers direct value to the host nation.

What makes this next phase even more promising is the forthcoming completion of a state-of-the-art ore processing plant, set to triple capacity at MRM. With a projected throughput of 400 tonnes per hour, this upgrade positions Gemfields to continue supplying a steady stream of varied, high-quality Mozambican rubies to meet increasing global demand.

Adrian Banks, Managing Director for Product and Sales at Gemfields, commented, “It is exciting to see the evolving variety of rubies being recovered by Montepuez Ruby Mining. I am particularly eager to see how a single fine-quality ruby weighing 36 carats will perform at our auction. I believe this ruby will be strongly contested by discerning clients who recognise the rarity and significance of such a gemstone, given both its size and quality.”

Beyond the mine, Gemfields has become a torchbearer for ethical luxury. Whether through its cutting-edge gemstone sort house, meaningful social and conservation projects, or its continued collaborations with iconic design house Fabergé, Gemfields’ mission is clear: to mine gemstones with transparency and purpose.