All metals will naturally develop a darker patina over time, as a reaction to the air, moisture, and the wearer's skin. Those pieces already with patination (like oxidised silver) will also likely change with wear. Any unwanted patina can be cleaned off with a treated polishing cloth. If you would like to maintain the bright finish on bronze and gold vermeil jewellery, it's best to avoid contact with lotions, perfumes and water. Gold vermeil will eventually wear off over time, this is true of all plated jewellery, please don't hesitate to get in touch if this happens as we can restore your item's original finish for a small fee.