Upper Burma was the sole source of gem quality imperial jadeite until the early 1970's, when jadeite was found at Itmurundy in Kazakhstan, some years later it was found in the Polar Urals at Pusyerka, and in 1992, in Khakassia.
Check out the story and the gorgeous jadeites here:
http://www.palagems.com/gem-news-2016-1 ... 10_18_2016)#jade
And the article named in this thread can be found here:
http://www.palagems.com/jade-russia
