Earrings by Miranda Sharpe The silver base of these ear studs has an engraved surface which is layered with cobalt blue enamel and fragments of 24ct gold foil. Each earring is slightly different and the gold details may vary slightly from those pictured. Features Primary Material : silver Other Materials : 24ct gold foil and vitreous enamel Fitting Type : Post Dimensions (mm) : 18x18x1.2 One of a Kind : No Metal : silver Hallmarked : Yes Wire Material : sterling silver Cleaning InstructionsUsing warm soapy water with an old toothbrush should be sufficient to clean thiese earrings. Solutions such as silver dip can be used. It is recommended that the solution be applied sparingly with an old toothbrush or cotton bud to silver areas only,contact with the enamel may affect its surface, ensure they are rinsed and dried thoroughly afterwards. A standard silver cloth may also be used but please be aware that it will increase the shine on satin areas of silver.