How to store artificial jewelry

I have alot of nice artificial jewelry, some of which is very old and yet still goes with many of my outfits and some new jewelry peices. I wanted to know what is the best way to store artificial jewelry so that it lasts for a long time without it getting ruined?
I store each piece of jewelry in a small plastic bag, all my earrings are in a separate bag as well as necklaces. Sets come in their boxes anyway, so I just keep them in there own boxes.