While all the pieces are made from solid 18k gold and precious stones they still require a little love and care.
Make sure they are always packed separately because once in contact with other items they could get scratched or tangled.
For your jewelry to keep its shine you can clean your jewels at home using warm water, little soap and a very soft brush. Use the soapy water and gently scrub the piece with the soft brush.
You can also try soaking your jewelry in warm water for a few hours then gently scrub them with a soft brush
DO NOT scrub pearls and avoid direct contact with perfumes and chemicals. They are very delicate and need to be cared for differently. Preferably to be taken to a professional jeweler to be cleaned.