This is a beautiful complete set of 3 deluxe sheetlets, issued by the Congo Democratic Republic in 2011, depicting minerals. The first sheet feature a Quartz Amethyst on the stamp, and a Corindon and Amethyst on the sheet. The second has a Chrysocolle on the stamp, and an Emeraude and a Dioptase on the sheet, and the last sheet features a Cerusite-Baryte on the stamp, and a Fluorapophyllite and a Vanadinite on the sheet. The set is Michel catalog #2085IIA-2060IIA/Bl.400A-402A, and is Post Office fresh, mint never hinged, and F/VF.