two and a bit years on..., page-6

yes t4p, i have been doing a little reserch. only a little lol

" Some of today's most popular colored diamonds are the purplish pink and pink diamonds from the Argyle mine in OZ. Until the mine opened in 1985, pink diamonds were almost unknown, and today, this mine accounts for over 90% of the worlds pink diamond supply.
The best pink diamonds came from the alluvial deposits, the watery areas surrounding the argyle mine.
Recently, RIO announced that it will shut down all open-pit operations at Argyle in 2008 and convert the facility into an underground mine.
Experts agree that with underground mining, there will be fewer quality stones, average sizes will continue to decrease and the supply will drop by a least 40%. All of these factors are likely to lead to a substantial increase in pink diamond prices" :))))))))))))))))))