Gemfields Group Limited is a Guernsey-incorporated mining company that specializes in the responsible mining, grading, and marketing of coloured gemstones, particularly emeralds and rubies; it operates as the majority owner and manager of key producing assets including the Kagem emerald mine in Zambia, where it holds a 75% stake, and the Montepuez Ruby Mining operation in Mozambique, also with a 75% interest; the company supplies rough, uncut gemstones to cutters and downstream markets primarily in India and Thailand via proprietary grading systems and auction platforms, contributing an estimated 25-30% of global emerald supply and 50-60% of global ruby supply; additional exploration and prospecting interests span Zambia, Mozambique, Ethiopia, and Madagascar, with a minority stake in platinum-group metals producer Sedibelo Platinum Mines Limited. Founded in 2007 and headquartered in London, United Kingdom, with its primary listing on the Johannesburg Stock Exchange under ticker GML.JO and a secondary quotation on London AIM, Gemfields focuses on transparency, ethical sourcing, and community impact through independent audits, environmental rehabilitation, and the Gemfields Foundation. In recent developments, the company completed a USD 30 million rights issue in June 2025 to bolster its balance sheet amid market challenges; sold its wholly-owned Fabergé luxury brand subsidiary to SMG Capital LLC for USD 50 million in August 2025, streamlining operations and providing working capital for core mining activities; suspended emerald mining at Kagem during the first half of 2025 before progressive expansion; and advanced construction of a second processing plant at Montepuez Ruby Mining, expected to triple ruby processing capacity upon operationalization in late 2025.