40×30 Cabochon; Mookaite Jasper, also called Mooka or Mookite – From Mooka Station, Gascoyne River area, in western Australia this is a Fossiliferour chert/Jasper. This rock consists of the remains of tiny organisms known as radiolaria that have an unusual skeletal structure of opaline silica. Actual there are many names for this Jasper; it is also known as mook, mooka, mookite, mookalite, mookerite, moakite, moukalite and moukaite. This cab has an shades of red and tan colors. This cab has a glossy polish.