This is a beautiful sheet of 2 stamps, issued by Guinea-Bissau in 2010, displaying minerals. Featured minerals shown on the stamps include Amethyst Quartz and Malachite Pseudo Azurite with Plancheite. The sheet is Michel catalog #4991-2/ Bl. 862, and is Post Office fresh, mint never hinged, and F/VF. Click here to visit my eBay Store for other auctions and Direct Sale items:
