The main diamond‑producing countries include Russia, Botswana, Canada, the DRC, and Australia. These regions supply most of the rough diamonds that later get cut and polished in global hubs.

Canada and Botswana are known for stronger regulations and ethical sourcing, which appeals to brands focused on responsible jewelry. Rough diamonds from these countries are sold through sights, tenders, and auctions before being shipped to cutting centers like India for processing.