Your jewelry was made to last a lifetime with proper care!
Keep all jewelry away from chemicals including makeup, perfume, moisturizers. Put your jewelry on after applying these things to your skin. Chemical cleaners are not recommended on my metalwork. A patina has been added to your jewelry to give it an aged, oxidized look. Wash with a soft toothbrush or cloth with warm soapy water and buff with a soft cloth only, or jewelry polishing cloth.
The patina may darken with age. This varies with an individual's chemistry. It may darken quicker on some people than others. If you want to lightly clean it because it seems too dark to you, you can use a jewelry polishing cloth to lighten the patina. If you have any questions or concerns, just contact me, I am glad to help!