One thing that you should always remember is to store all different types of jewelry separately. This would prevent any sort of damage to the jewelry and retain their polish and luster for a longer period of time.
Welsh gold jewelry should be carefully wrapped in soft cloth and stored in a box. It is important to note that these should not be in contact with moisture or heat. It is important to clean your jewelry once in a while. Use warm water and mild shampoo to clean them and restore their luster.
Always remember not to spray any perfume or deodorants on your Welsh jewelry. This again might cause damage to them. All you need is a little bit of extra care to preserve these beautiful pieces of jewelry.