Need safe tarnish remover

I make a lot of jewelry with sterling silver and pearls, turquoise, and soft
stones. When not being displayed for purchase, I usually keep my jewelry in
zip-loc bags which helps to keep the tarnishing at a minimum. Over time, these
jewelry pieces do become tarnished and I have to clean them - but
what a pain in the ass trying to use a jewelry cloth!!!

I realize that I cant just dip that jewelry in Tarnex because the Tarnex would
destroy the pearls and porous stones, but I've read where you can make a tarnish
remover from Baking Soda, Salt, Aluminum Foil, and water in a glass dish. Would
this concoction harm pearls and/or soft stones?

Short of busting apart the jewelry to clean the silver, what can I use/do to
clean tarnish from silver that is nestled between porous stones or pearls and is
very hard to clean?

Sterling