How long your pieces last depends on how often you wear it, as well as the PH of your skin, exposure to chemicals, and frequent rubbing again other surfaces. Tarnishing (also known as oxidation) is a result of oxygen or sulfur coming into contact with sterling silver. Tarnished silver is duller and sometimes a dark color.
Here are some ways to extend the life of your Sterling Silver jewelry:
Wash your hands before putting on or taking off jewelry.
Put on jewelry after you’ve applied lotion, perfume or makeup.
Take off your rings or bracelets before chopping tomatoes or doing dishes.
Avoid rubbing bracelets and necklaces against each other. Try to prevent rings from banging into counter tops and rubbing against other metal parts (such as keys) buried in pockets and purses.
Don’t swim in your jewelry or wear it when you’ll be sweating profusely
Clean your jewelry gently with a soft cloth and store it in a pouch or ziplock separate from other jewelry and humidity so as to keep it free from oxidizing elements.