Which country is known as the world's largest corundum marketing center?

Thailand is recognized as the world's largest marketing center for corundum, which includes rubies and sapphires. This reputation is largely due to the country's historical significance as a trading hub for these gemstones, particularly in areas like Chanthaburi and Trat. Thai traders not only handle a vast amount of corundum but also have developed expertise in cutting, enhancement, and retailing these stones, making Thailand a pivotal center in the global colored stone supply chain. The combination of established markets, skilled craftsmanship, and a rich cultural heritage tied to gemstone trading solidifies Thailand's position at the forefront of the corundum market.