It's best to remove your jewelry before bathing, swimming, doing yard work, working out, using perfumes and cleaning products.
Do not use jewelry dip or tarnish cleaners as they are too harsh (especially for enamel pieces.)
Your jewelry has a matte finish. To maintain it and remove tarnish, make a paste using baking soda and dish soap (use more baking soda than soap.) Then, use your fingers or a toothbrush to scrub over the silver. Rinse with warm water and gently pat dry. Store in a dry safe place.
To prevent extra tarnish. Store in a zip lock bag or jewelry box.