Marttiini Sharpening Stone

This is a sharpening stone quarried in Finland, and is composed of quartz, feldspar, and mica.  This stone is around 800-1000 grit.  Has a groove for sharpening hooks.  Measures 4 inches by 1 inch by 3/16 inches.  Comes with a very nice carrying case with a belt loop, so it's always at your side when you need it.  Makes a great gift for the camper / hunter / fisher in your life!