Which country is the major source of commercial-quality amethyst?

Brazil is recognized as the major source of commercial-quality amethyst due to its extensive deposits and high-quality production. The country has notable amethyst deposits, particularly in regions like Minas Gerais, where the geological conditions are ideal for the formation of this purple variety of quartz. Brazilian amethyst is often characterized by its rich color and clarity, making it highly sought after in the gemstone market. Furthermore, Brazil’s long history of gem mining and its established infrastructure for gemstone processing contribute to its status as a leading supplier of amethyst to global markets. While other countries like Argentina, India, and Madagascar also produce amethyst, they do not match Brazil's output and quality in commercial quantities.