Blue sapphires are primarily sourced from regions such as Kashmir, Sri Lanka, Myanmar (Burma), Madagascar, and Australia. Kashmir sapphires, renowned for their exceptional quality, were predominantly mined in the late 19th and early 20th centuries. Sri Lanka, historically known as Ceylon, is famed for producing sapphires with a lighter blue hue. Myanmar is another notable source, yiel... https://rashiratanjaipur.net/Blog/top-origins-of-blue-sapphire/