Main Material : Silver | Other Materials : Enamel and Fine Gold | Fitting Type : Post or Stud | Dimensions (mm) : 45 x 15 | One of a Kind : No | Metal : Silver | Hallmarked : Yes | Wire Material : 9ct Hard white gold
I recommend cleaning the silver areas with a silver cloth ( such as Goddards )
I would avoid using a liquid or cream product as this may affect the enamel