Gem Resources Plc operates as a mining and mineral exploration company focused on the development of colored gemstones, particularly emeralds. The company primarily advances its projects, including the Gravelotte Emerald Mine in South Africa and the Curlew Emerald Mine in Australia, aiming to achieve initial production and refine processing methods. It also explores strategic mineral opportunities in Zambia, targeting high-grade graphite, coltan, lithium, and rare earth elements. Gem Resources generates revenue through the production and sale of these minerals, operating mainly in South Africa, Australia, and Zambia.