I just got a new necklace that I never want to take offIt is cubic zirconium and sterling silverIs that ok to wear in the shower?
Yes it's fineI haven't taken mine off in years except to clean itHowever, if it starts to get tarnished, you can polish it with a polishing cloth or line a small bowl with aluminum foil and put a tsp of baking soda with hot water and dip the chain in it for a minute then rinse with cool water and wipe with a cloth.
Your answer is to use copper foil shieldingIt is costly and can be ordered through many electronic supply companies.