The Argyle Diamond Mine ( Rio Tinto ) Australia was the most important producer of pink, blue and red diamonds in the world. The stones mined were 80% brown, 15% yellow and 4% white diamonds. Pink, blue and red diamonds accounted for only 1% of the mined quantity. This mine alone produced about 90% of all pink diamonds discovered in the world to date.
The Argyle diamond mine has discontinued operations by the end of 2020, as the mined material is almost exhausted and therefore a profitable mining is no longer guaranteed. This is already starting to cause a significant decline in the availability of high quality pink diamonds on the world market. The already rare Australian pink diamonds have become even more sought after in recent months.