Earrings by Kate Smith Silver and gold spiral earrings.The pattern is achieved through a process called acid etching. 22ct gold plate is then applied into the etch to give a beautiful, contrasting colour between the silver and gold.7mm diameter.Perfectly complemented by our spiral etched silver pendant with gold plate and etched silver bangle with gold detailing. Features Primary Material : silver Other Materials : 22ct gold plate Fitting Type : Post Dimensions (mm) : 7mm diameter One of a Kind : No Metal : sterling silver Hallmarked : Yes Wire Material : silver Cleaning InstructionsPerfumes, lotions and chemicals can all affect the look of jewellery over time.Using a soft (old!) toothbrush and warm soapy water can remove build-up of dirt/discolouration.Using hairdryer (on a low setting) afterwards will help to avoid water marks on your jewellery.Avoid contact with harsh chemicals, especially when wearing jewellery with gemstones.If you find your item of silver jewellery blackens when you first wear it, follow the above method of cleaning with a toothbrush & warm, soapy water.Initial discolouration should fade within time. It isn’t clear why this can happen to some people’s jewellery, but from researching, it seems it could be attributed to medication, diet or even pregnancy! (If you are male, you can probably rule out the last cause).FinishesFinishes that are applied to our jewellery can alter over time, simply due to everyday wear. This is more applicable to rings and bangles; satin & frosted finished pieces may become shinier with wear and polished items can become slightly duller with time.