Gold itself does not corrode, but the primary alloys of silver or copper will do so under moist conditions. When you perspire fats and fatty acids released can cause corrosion of 14kt fold, especially when exposed to warmth and air. This problem can be especially troubling in seacoast and semitropical areas, where chlorides combine with perspiration to form a corrosive element that discolors skin. You should clean your jewelry frequently to keep it looking its best and minimize the environmental damage caused in our industrialized lifestyles. Even the design of jewelry can be an influence.
Wide shanks have more surface area to contact abrasives or corrosives.
Concave surfaces inside a shank form collection points that trap moisture and contaminants, also causing a type of dermatitis. Remove all rings before using soaps, cleaning compounds or detergents, and clean rings frequently. You will be amazed at how well your jewels sparkle. If these tips still don't solve your problem you may want to switch to 18kt or platinum. It Ain't Easy Being Green.