Myanmar: The most important deposits are in upper Myanmar (Burma) near Mogok. That region has produced some of the finest rubies ever mined, but in recent years very few good rubies have been found there. The very best color in Myanmar rubies is sometimes described as "pigeon's blood". In early 1990's large new deposits were discovered at Mong Hsu. The most recently found ruby deposit in Myanmar is in Namya (Namyazeik) located in the northern state of Kachin.
Thailand: The deposits are located in Chanthaburi, Thailand often have a brown or violet tint. The Thai ruby production is declining, and Chanthaburi is now mainly a center for processing and trading gems.
Tanzania: On the upper Umba River in northwest Tanzania are deposits for gemstone quality rubies that are violet to brown-red. A few opaque rubies are mined as well.
Sri Lanka: The deposits are located in the southwest of the island in the Ratnapura district. Rubies from those deposits are usually light red to raspberry red.
Other deposits of some importance are found in: Afghanistan, Cambodia, Kenya, Madagascar and Vietnam. Less significant deposits are in: Australia, Brazil, India, Malawi, Nepal, Pakistan, United States and Zimbabwe.
Posts
