The copper in 925 sterling silver, on the other hand, may react with ozone and hydrogen sulfide in the air, causing sterling silver to tarnish. Wearing your sterling silver jewelry regularly is the finest method. Every time you wear a piece of sterling silver, the oils in your skin "clean" it. If you are in love with one of your pieces and don't want to sell it, consider wearing it almost every day for several months. This will help keep corrosion at bay. If you want to protect your jewelry from wear-and-tear damage while still being able to enjoy it, try spraying it with WD-40 after washing it. The oil in the spray protects metal surfaces from oxidation and corrosion. Or you can use coconut oil as an alternative. It works just as well if not better! Just be sure to only use pure, unrefined coconut oil and not the packaged kind that contains chemicals to extend its life. There's no need for such things when using natural products like these for your jewelry. Finally, if you want to keep your jewelry looking brand new even after many years, try applying a thin layer of oil each time before putting it away. That way, when you go back to it later, it'll still feel fresh.