Prior to the 1980’s, production of pink diamonds had been sporadic and limited to regions in India, Brazil, Africa and
Indonesia. Rio Tinto’s Argyle diamond mine in Western Australia is the only consistent source of pink diamonds and
produces over 90% of the world’s annual natural pink diamond supply.
The Argyle mine, in production since 1983 is unmatched in the sheer quantity and quality of the pink diamonds it has
produced over the years, yet pink diamonds represent less than 1% of total diamonds mined per annum.
Due to economic viability of continued mining, Rio Tinto Geologists have forecast that the mine is expected to cease production in 2021-
2022.
When Argyle does close, the global supply of wholesale pink diamonds is projected to substantially reduce in the absence
of other existing consistent sources of pink diamonds. Like all assets, the diamond valuations follow the laws of supply
and demand. This closure further underpins the investment grade pink diamond as an investment opportunity worthy of
consideration.