Take of fwhen shower or swim
Clean it and wipe it with silver polish cloth then store it in a clean pouch every time you don’t wear it. Never let it sit for long time without storage it in a pouch.
All silver does get tarnished but real silver can be clean off with silver polish cream when it tarnished. Before apply the silver polish cream, make sure rinse it with warm water, then apply for the silver polish cream as instructed in their bottle. The best result per my own experience is after finished cleaning with the silver cream, apply some toothpaste and rub with a soft cloth. Guaranteed you will be very happy to see your jewelry shine again like brand new.