RE:Diamonds Thrill Again
Yes, it appears the supply is dwindling as many of the present diamond mines now producing are winding down. This one as well shortly, and it is no slouch either as it produces many cts per year.
Remove the supply from the growing demand and away we go to the promised land:\
The Argyle Diamond Mine is a diamond mine located in the East Kimberley region in the remote north of Western Australia. Argyle is the largest diamond producer in the world by volume, although due to the low proportion of gem-quality diamonds it is set to close by 2018. It is the only known significant source of pink diamonds, producing over 90% of the world's supply.[1] It additionally provides a large proportion of other naturally coloured diamonds, including champagne, cognac and rare blue diamonds. Argyle is currently transitioning from an open pit mine to an underground mine. In 2013, Argyle is estimated to produce 10.2 million carats with an average per carat price of $25/carat.[2]
The Argyle diamond mine is also notable for being the first successful commercial diamond mine exploiting a volcanic pipe of lamproite, rather than the more usual kimberlite pipe; much earlier attempts to mine diamonds from a lamproite pipe in Arkansas, USA were commercially unsuccessful. The Argyle mine is owned by the Rio Tinto Group, a diversified mining company which also owns the Diavik Diamond Mine in Canada and the Murowa Diamond Mine in Zimbabwe.