Rough Diam Prices (Fri, 04 Jun) - Mentioned by Will PurcellPaul Zimnisky's global rough diamond price index was unchanged last week. Prices do appear to at least be levelling off after a strong comeback from the COVID-19 collapse of early last spring. Prices are up 25 per cent since then, but they have essentially been flat for the past five years. Worse, prices are down nearly 16 per cent from this time a decade ago, when rough prices bubbled higher on strong demand and weak supply after the 2009 recession -- a situation much like today.