Vermeil, or gold vermeil, is sterling silver that has been electroplated with gold. To be considered vermeil, a piece must be plated with a gold purity level of at least 10 karats. The most valuable vermeil is 24kt gold, and thus the greater the karats, the higher the quality. Unlike normal gold plating, vermeil is required to have a gold plating thickness of t 2.5 microns, which is thicker than most gold plating. For this reason, it is less likely to tarnish than normal gold plating. To keep your vermeil bright, avoid contact with water and rough use. Frequently polish with a gentle cloth.