Sunstone has natural inclusions and cleavage points by default. If you are familiar with other feldspars like Moonstone or Labradorite, Sunstone is the same in that the material often has a cracked or cleaved appearance. However there is a big difference between natural formation and fractures. (We'll always report fractures!) So that "cracked" look in your feldspar is just how the material is! All natural of mother nature.
