I hope you wear and enjoy your jewelry every day however some activities should be done unadorned. Heavy duty chores, gardening, swimming and hot tubs are a few examples. Your jewelry dislikes harsh chemicals. Perfumes, hair products, chlorine and ammonia can damages soft stones and discolor metals.
All of your jewelry can safely be cleaned with a soft toothbrush and mild soap.
Storing your jewelry in a small sealed plastic bag will help prevent tarnish.
Enamel jewelry is glass. While it is a material that can last hundreds of years, it is also breakable. If your jewelry falls off of a table onto a hard wood or tile floor, it could crack. Hopefully this will never happen but if it does I am happy to evaluate the damage and repair your piece at a fair price.