Do not wear your jewelry when using any harsh cleaning supplies, chemicals, or when swimming in a chlorinated pool. I also advise to avoid wearing your jewelry when applying hair products, lotions, sunscreens, or perfumes. These products may be harmful to the stones and pearls, as well as altering the look of the metals.
Use a polishing cloth regularly to keep your silver looking shiny and new. I always include a complimentary polishing cloth with each piece of jewelry for this purpose. I also recommend storing your jewelry in an airtight container or plastic zippered bag in a cool, dry place to avoid accelerating the tarnishing process through unnecessary exposure to air and humidity.