This natural gem was proudly finished by ammonite ammolite world and is ready to be set into a jewelry creation. Our stones are carefully and superbly hand polished. No Coatings, every cutter has a different way of grading their stones therefore i will not try to give them a grade myself. Ammolite 70 million years in the making is one of the rarest gems in the world. Ammonite’s Ammolite with color have only been found in Alberta, Canada. I am not try to hide any flaws in the photos, so you know what you are buying. Beware of other selling resin coated stones unless you are aware you are only purchasing “raw” Ammolite.