Viridas, the natural resource investment firm, has decided the time is right to cash in on its investment in fellow investor in natural resources, Leed Petroleum.The company made just short of £2.9m after selling 592.7m Leed shares at 0.48p per share. Following this sale, Viridas will continue to hold 166.7m warrants to subscribe for new ordinary shares at a subscription price of 0.15p per share.Crucially, Leed has an investment in Manas Coal which is trying to find coking coal deposits in the Kyrgyz Republic and , according to Viridas, has attracted considerable attention from suitors.Viridas Chairman Nicholas Lee will remain as a director of Leed. He commented on the disposal: "I see the current interest in Leed as being an endorsement of our initial investment decision and a strong indication that Leed is set for an exciting future."Viridas shares were up 1.67% by 11am. Over the last year the stock has dropped 85%.Leed Petroleum had dropped nearly 10% by 11:37am. Its value has declined 98% since January last year.