The document summarizes a research project studying the Kimberley Process Certification Scheme (KPCS) and artisanal diamond mining in central Africa. The project had two objectives: strengthen KPCS integrity by improving control over informal extraction and trade, and improve social and economic conditions for artisanal miners. The research included a study of transborder mining dynamics, the experiences of artisanal miners, and reviews of past development programs and interventions. The research aims to support the World Diamond Council in implementing KPCS recommendations and lessons learned to formalize the artisanal mining sector in a way that benefits local communities.