The best way to ensure your jewelry stays true to the patina it came with is to wear it! Over time it will deepen, meaning the shine will take on a lovely glow, and if there is a darkened patina on your piece, it will retain that color and become even better. If your piece has a stone set in it that is not a diamond, I would recommend not swimming, or bathing with it on...with that said, I definitely have broken this rule and everything has been fine. To keep your jewelry looking like it did when it arrived to you, I would keep it stored in a container, like the cloth bag it came in or a jewelry box. If and when you think it needs any cleaning, I recommend not using silver polish or a polishing cloth, this usually ends up taking off too much of the patina. I recommend using a Q-tip with the tiny amount of toothpaste, rub it all over the surface of the silver and then rinse with water and dry thoroughly. In some cases you may want the patina restored to it's original darkness, and in this case I will re-do the patina for you at no extra cost, just send me an email and we can discuss details.