About us
An African company committed to a transparent, responsible and sustainable gold and diamond industry.
United Gemstones Africa and Precious Metals S.A
UMA S.A is much more than a precious metal refining company.
Our commitment to innovation and social responsibility guides everything we do. We are firmly committed to environmentally friendly practices: our automated refining technology uses eco-friendly processes to minimise our carbon footprint and reduce our impact on local ecosystems.
We are committed to offering our clients an outstanding experience and tailor-made solutions. That is why we are the ideal partner for your precious metal refining and rough diamond trading needs.
Who are we?
UMA S.A is a pioneer in using green technologies to turn natural resources into high value-added products. Our commitment to innovation and social responsibility guides everything we do.
Environmental commitment
Our automated refining technology uses eco-friendly processes to minimise our carbon footprint and reduce our impact on ecosystems.
Trust and integrity
Trust is the cornerstone of our relationships with our partners. We uphold the highest standards of integrity, ethics and transparency in all our activities.
Our missions
UMA S.A is committed to transforming Africa's mining sector by making it more transparent, responsible and sustainable.
As part of the development of the diamond and gold industry in the Republic of Cameroon and in Africa, in compliance with the criteria and regulations of the Kimberley Process for diamonds, the OECD, the EITI and the ICGLR,
UMA S.A intends to contribute to the Cameroonian State's emergence policy by creating a Diamond and Gold Office, responsible for the control, verification, securing, Kimberley Process compliance, expertise, valuation, certification and marketing of diamonds and gold.
Our mission rests on 5 key pillars
Ensure a fair price for miners
Promote responsible mining
Finance the development of the sector
Build an integrated value chain
Develop African expertise
Why choose us?
We offer our clients an outstanding experience and tailor-made solutions in precious metal refining and rough diamond trading.
Unmatched expertise in precious metal refining
Cutting-edge technology for eco-friendly production
A commitment to social responsibility and innovation
UMA S.A stands out for its innovative and sustainable approach to the African mining industry.
