26 August 2025
Introducing Imboo – the 11,685 carat ‘Buffalo’ emerald
Gemfields unveils Imboo – the 11,685 carat ‘buffalo’ emerald – at September 2025 auction.
Gemfields is delighted to introduce Imboo (‘buffalo’) at its forthcoming high-quality emerald auction, which runs from 25 August to 11 September 2025.
At 11,685 carats, Imboo is the latest, and largest, exceptional gemstone discovered at Kagem Mining (Kagem), believed to be the world’s single largest-producing emerald mine. Located in Zambia’s Copperbelt Province, Kagem is 75% owned, and operated, by Gemfields, in partnership with the Zambian government through the Industrial Development Corporation.
“Even under the beam of a strong light that is necessary to illuminate a gemstone of this remarkable size, Imboo reveals an intense, verdant green touched with golden warmth and a clarity that captivates the eye,” explained Adrian Banks, Gemfields’ Managing Director – Product and Sales.
The new owner of Imboo will be offered the opportunity to deploy unique nanoparticle-tagging, courtesy of Gemfields’ longstanding partner Provenance Proof. Providing full traceability of the gemstone, even after it has been cut and polished, Provenance Proof enables future owners to be certain that their gem originated from Kagem – and that it was part of this historical find.