Gemfields plc engages in the mining, exploration, and processing of gemstones in Zambia. It operates through five segments: Zambia, Mozambique, UK, Fabergé, and Other. The company explores for emerald, beryl, ruby, and corundum deposits, as well as supplies colored gemstones. It holds a 75% interest in the Kagem emerald mine covering an area of approximately 41 square Kilometers in Zambia; and the Montepuez ruby mine covering an area of approximately 350 square kilometers in Mozambique. The company also holds a 50% interest in the Kariba amethyst mine in Zambia. In addition, it is involved in the sale of cut and polished gemstones; provision of marketing, technical, and administrative services; wholesale, retail, and promotion of the Fabergé collection of jewelry and watches; and gemstone trading, auction, and marketing activities. The company was founded in 2005 and is based in London, the United Kingdom.