Jewelry gets dirty and dusty with wear. The more you wear a piece of jewelry the dirtier it can get. Rings can get very dirty when they are worn everyday. Our hands do many dirty things and the rings we wear can collect that dirt. Necklaces can also get very dirty from makeup, food and sweat. Every so often it is a good idea to clean your jewelry and it is not that hard to do.
Hot soapy water is the best way to clean much of the jewelry that you have. You can take a soft toothbrush and use it to scrub the jewelry with hot soapy water. Then give the jewelry a good rinse in some hot water and then some cold water to finish. This is a great way to clean plastic, stone, ceramic or metal jewelry. It is not a good method to clean pearls or paper jewelry.
Paper jewelry is hard to keep clean. You can try to rub it with a moist cloth but do not rub too hard or you can damage the item. If the paper is just dusty you can wipe it with a very soft cloth to clean it.
Pearls should not be immersed in water or they might fall off if they are glued. You should use a moist cloth if the pearls are really dirty. Otherwise just wipe them with a very soft cloth to get dust off.
Rings can be cleaned with hot soapy water and a soft brush like a toothbrush. Scrub the dirty ring with the brush and rinse it in some water. You can also clean a ring by wearing it when you do the dishes. The hot soapy dish water can clean up a ring nicely but it may not get into the nooks and crannies of the ring. For that you may need to use a brush in the nooks.
Always be careful when you wash your jewelry. Most pieces of jewelry are delicate and can easily be damaged. You may not want to wash your best pieces of jewelry by hand but I do and they always turn out looking great. I constantly wear my wedding rings with diamonds in them and they never need to be cleaned since I do my dishes by hand.
Keep the jewelry that you are not wearing in containers to prevent them from getting dusty. Silver jewelry is best kept in an air tight container to prevent them from tarnishing.