This pyrite stone is a great genuine gemstone that you can add to your collection of loose gemstones at your jeweler’s workbench. Each of these faceted marcasite stones is a high quality gemstone and is available in shades of metallic grey. Available in a range of shapes and cuts, these loose marcasites will match any jewelry design you are working on or repairing. These silver marcasites will help you create beautiful finished jewelry every time.