Gemfields confirm its, G-Factor for Natural Resources – figures for the Kagem emerald mine in Zambia and the Montepuez ruby mine in Mozambique, which now stand at 20% and 25% respectively for the 10-year period from 2015 through 2024. The G-Factor for Natural Resources reveals the percentage of natural resource revenue paid to the government of the country from which the resource is derived.
First announced in 2021, Gemfields shares its G-Factor for Natural Resources, annually in an effort to promote greater transparency and accountability regarding the level of natural resource wealth shared with the host country’s government, whether that value originates from the mining, oil, gas, timber or fishing sectors. It is also an indicator of the efficiency of natural resources companies in converting those natural resources into funds for the host government.
In 2024, Zambia became the first country in Africa to publish, G-Factor for Natural Resources – data for key mining companies on its Zambia Extractive Industry Transparency Initiative (ZEITI) Online Fusion Portal, a pioneering step providing Zambian citizens with direct insight into their country’s participation in its natural resources.
Gemfields’ CEO, Sean Gilbertson, said, “Gemfields 2024 G-Factor for Natural Resources figures highlight the contrasting contributions that a mining company can make to its host country depending on the prevailing operating and market conditions. Despite a challenging in-country context, Montepuez Ruby Mining was able to return a robust 24% of its revenue to the Government of Mozambique given a resilient ruby market.
Conversely, the widely documented adverse market conditions for Zambian emeralds in the second-half of 2024 impacted profitability at Kagem. Indeed, Kagem reported losses in respect of 2024, suspended mining operations at the end of the year and saw its 2024 G-Factor falling considerably to just 9%.
Focussed in-pit mining resumed in May 2025 and, should the improving market conditions for Zambian emeralds continue, Kagem’s G-Factor should again return to its long-term average of circa 19%.
While Kagem had a poor 2024, we remain committed to the transparency brought by the G-Factor for Natural Resources and we hope this candidness will encourage others to adopt the G-Factor, allowing host governments and their citizens to better understand the performance of the custodians of their resources.”
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