Carefully storage
Store in an area with low humidity (no bathroom storage). Put each piece in an airtight (Ziploc) bag. Try Placing a packet of silica or piece of chalk in the storage bag and keep clasps/closures unhooked to avoid moisture buildu
Know when to take off you jewelry
You actually should wear your jewelry often to protect it by the natural oils in your skin. However, it had better be taken off before you working out, swimming, showering, cleaning, sunbathing, supplying hairspray or hair products or putting on lotion and makeup
Usually cleaning
Even the best-cared-for jewelry will sometimes require cleaning. Polishing your sterling silver jewelry will typically be the best way to clean it.