Gemfields emerald auction $29.6M: cashflow and mine planning notes for engineers
Reviewed by Joe Ashwell

First reported on MINING.com
30 Second Briefing
Gemfields’ first commercial-quality emerald auction in nine months raised $29.6 million, selling all 44 lots from its 75%-owned Kagem mine in Zambia at an average $9.72 per carat after intense buyer activity in Jaipur from 24 August to 10 September. The cash inflow follows a 17% cut in group operating costs, the $50 million sale of Fabergé and a $30 million rights offer, all aimed at stabilising finances after production disruptions at Kagem and the Montepuez ruby mine. Despite firmer prices for higher-quality stones, Gemfields faces rising fuel costs and potential diesel supply “pinch points” at its Zambian and Mozambican operations.
Technical Brief
- Auction ran in Jaipur, India over 18 days, from 24 August to 10 September.
- All 44 emerald lots originated from the 75%-owned Kagem open-pit operation in Zambia.
- Gemfields’ market capitalisation sat at £1.07 billion after a 13.5% share price drop to 2.51p.
- Previous divestment of Fabergé raised $50 million, earmarked for debt reduction and expansion capex.
- A $30 million rights offer was completed to bolster liquidity and operational flexibility at Kagem and Montepuez.
- Group operating costs were cut 17% year-on-year, indicating material reductions in mine-site and corporate overheads.
- Rising Middle East tensions are inflating diesel prices, directly impacting operating costs at diesel-dependent Kagem and Montepuez.
- Contingency planning includes alternative fuel supply routes, increased on-site diesel storage and operational adjustments to mitigate “pinch point” risk.
Our Take
In our database, Gemfields’ 2025 auction revenue of $129 million (down 34% year-on-year) and a 32% fall in total revenue suggest that even a $29.6 million emerald auction from Kagem is more of a liquidity and sentiment boost than a sign that coloured gemstone demand has normalised.
The combination of a 17% operating cost reduction, the $50 million Fabergé sale and a $30 million rights offer indicates Gemfields is structurally deleveraging its exposure to luxury branding and shoring up balance-sheet resilience around its core Kagem and Montepuez mining assets in Zambia and Mozambique.
With our coverage showing multiple recent pieces on Gemfields’ weaker pricing and grade volatility at Kagem and Montepuez, the achieved $9.72/ct at this emerald auction will be closely watched by operators of other coloured gemstone projects as a reference point for what the current market will clear for commercial-quality material.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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