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Gemfields

Gemfields is a mining company specialising in the exploration, mining and marketing of coloured gemstones, principally emeralds and rubies. The company is headquartered in London and operates primarily in Africa, with flagship assets in Zambia and Mozambique. Gemfields owns a majority stake in the Kagem emerald mine in Zambia, one of the world's largest producing emerald mines, and the Montepuez ruby mine in Mozambique, which is among the most significant ruby deposits globally. The company is listed on the London Stock Exchange's Alternative Investment Market (AIM) under the ticker GEM. Gemfields has pioneered a transparent auction system for selling rough gemstones, holding regular sales events that attract international buyers and cutters. The company's business model emphasises responsible mining practices, community development and traceability in the coloured gemstone supply chain. Gemfields also holds exploration licences for other gemstone deposits across Africa. The company was founded in 2007 and has grown to become a leading supplier of responsibly sourced coloured gemstones to the global jewellery market. Its operations contribute significantly to employment and economic development in the regions where it operates, particularly in rural Zambia and northern Mozambique.

Gemfields News


A rough ruby at the Montepuez mine in Mozambique
Mozambique tightens grip on mining with 15% state stake rule, local processing
4th June 2026 By: Reuters

Mozambique's President Daniel Chapo has signed a new law requiring 15% State ownership in all mining ventures and local processing of minerals, tightening control over its resources as demand for... 


Rough emeralds recovered at the Kagem mine in Zambia
Gemfields' latest emerald auction yields $26.8m in revenue
22nd May 2026 By: Creamer Media Reporter

Johannesburg- and London-listed gemstone miner Gemfields reports that its latest auction of higher-quality rough emeralds, recovered from the company's 75%-owned Kagem mine, in Zambia, generated... 


A cut and polished emerald
Kagem donates gemstone processing equipment to Zambian training centre
15th May 2026 By: Schalk Burger

Emerald mining company Kagem Mining, which is a subsidiary of Johannesburg- and London-listed Gemfields, has donated cutting and polishing equipment to the Gemstone Processing and Lapidary Training... 


An image of the Kagem team receiving its award from the Zambian Minerals Regulation Commission
Gemstone miner focuses on stabilising operation
8th May 2026 By: Nadine Ramdass

Following a period of concurrent but transient challenges that weighed on near-term cash flow, gemstone miner Gemfields’ priority for this year is to focus resources on securing profitability... 


An image of resources from Gemfields
EITI Mozambique mulling integration of G-Factor for Natural Resources
21st April 2026 By: Tasneem Bulbulia

The Coordinating Committee of the Extractive Industries Transparency Initiative (EITI) Mozambique has confirmed that integrating the “G-Factor for Natural Resources” – an indicator which reveals... 


Gemfields CEO Sean Gilbertson.
Gemfields is distinctively open about resource wealth shared with host countries
9th April 2026 By: Martin Creamer

Strengthening transparency to reflect what natural resource extraction contributes towards improving lives and living is what the Johannesburg- and London-listed Gemfields mining company has... 


Montepuez mine
Gemfields reports difficult year amid operational interruptions
24th March 2026 By: Sabrina Jardim

Amid a difficult year, gemstone miner Gemfields has reported that the operational interruptions at the company’s 75%-owned Montepuez Ruby Mining (MRM), in Mozambique, and at its Kagem emerald mine,... 


An image from the Kagem emerald mine
Kagem achieves four-year LTI-free milestone
23rd February 2026 By: Tasneem Bulbulia

Emerald producer Kagem Mining, which has operations in Zambia, has been recognised by that country’s Minerals Regulation Commission for its four-year lost time injury- (LTI-) free achievement.... 


An image of the Montepuez mine
Gemfields earns $53m from February ruby auction
23rd February 2026 By: Tasneem Bulbulia

Gemstone miner Gemfields earned revenue of $53-million from a mixed-quality rough ruby auction held from February 9 to 20.  The gemstones were extracted by Gemfields’ 75%-owned Montepuez Ruby... 


The 11 685 ct Imboo emerald
Gemfields full-year auction revenues reach $128.5m
30th January 2026 By: Sabrina Jardim

Gemstone miner Gemfields earned total auction revenues of $128.5-million for the year ended December 31. The company reported a net debt position of $39.2-million – before auction receivables of... 


kagem mine
Kagem agrees to 10% salary increase in 2026/27
19th January 2026 By: Darren Parker

Emerald producer Kagem Mining, which is 75% owned by Gemfields and 25% by the Zambian government’s Industrial Development Corporation (IDC), has successfully negotiated the 2026/27 collective... 


emerald
Gemfields reports $25.4m result at year-end commercial emerald auction
5th December 2025 By: Darren Parker

Gem producer Gemfields reported $25.4-million in revenue from its November to December auction of commercial-quality rough emeralds, closing the year’s sales with one of the company’s strongest... 


Openpit mining operations at MRM
Two police officers killed in clashes with illegal miners at Gemfields' Mozambique ruby mine
16th October 2025 By: Creamer Media Reporter

Gemstone miner Gemfields has confirmed the death of two police officers at its Montepuez Ruby Mining (MRM) operation, in Mozambique, earlier this week. The company explains that about 40 illegal... 


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pqt: 0.056s - ct: 0.108s - 219pq - 2rq
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