In the early 1980s, which country was the major source for rubies?

The major source for rubies during the early 1980s was Myanmar, also historically known as Burma. This region is renowned for producing some of the highest quality rubies in the world, characterized by their deep red color and exceptional clarity. Myanmar's rubies are often referred to as "Burmese rubies," and they have been considered highly desirable in the gemstone market for their rich hue and historical significance.

Thailand has also been an important source of rubies, especially known for its trade and market presence, but in terms of origin and quality during that specific time frame, Myanmar was the leading supplier. Rubies from Thailand tend to be treated differently, often heat-treated to enhance their color and clarity, which affects their market perception and value compared to natural rubies from Myanmar.