Petra Diamonds in demand as gem prices recover A look at the major movers on the London market on Tuesday 3.08pm: Diamond company sparkles Petra Diamonds Limited (LON:PDL) has a bit of sparkle after its latest update. Its shares have added 3.33% or 0.05p to 1.55p after it reported a 16% rise in third quarter revenues to US$106mln, with prices back to to pre-COVID-19 levels. After the period end it sold what it calls an exceptional 11.82 carat blue stone for US$9.5mln and an exceptional 39.34 carat blue stone was recovered, to be sold via special tender. A successful capital restructuring saw net debt fall from US$700mln to US$290mln.