The jewellery are fragile, so it is important that you protect them when you are not using them. I recommend that you keep them in their boxes when you travel. Always take them off when you shower, go to bed and exercise. To keep them shiny polish them carefully with a polishing cloth. Never use chemical liquids as it will damage the silver and gold as well as the stones. Parfume, cream and sunscreen can make the jewellery tarnish.
I recommend that you buy a polishing cloth.