-Silver has its nuisances. With the time and use it tends to naturally oxidate, depending on the worn conditions (direct perfume, creams, sweat, climate humidity). To keep it shiny- clean it regularly with special products, keep it dry and wipe with clean soft cotton cloth/pad.
-Layers of Gold protects the polished shine and gives the earrings the rich warm color.
It can also be covered with the white gold (rhodium) to underline the cold white color and protect silver from oxidising.
-Gold 18k, White or Yellow, is strong noble metal, its brightness persists through time and its naturally endowed with hardness.
*trick for silver
Liquid to keep the silver shiny:
Soak a piece in a mixture of 1/2 cup white vinegar and 2 tablespoons baking soda for two to three hours (don't rub). Rinse it under cold water and dry thoroughly with a soft cloth. Keep it in dry natural fabric.