Different types of jewelry may have different care requirements.
Stainless steel jewelry is fairly resistant, but it's still a good idea to keep it clean and dry. It may not tarnish, but if not kept clean and dry, it can rust and pit.
Silver, the higher the silver content, the more prone it is to tarnish. Silver that is 925 is 92.5% silver, this is a little sturdier and requires a little less cleaning than higher silver content such as 950 or 999 fine silver. It's a good idea to keep a jewelry cleaner on hand.
Copper oxidizes and tarnishes, but most of the copper jewelry you see on my site will feature copper that has already been oxidized and polished. This is to give copper a deeper antiqued look which has the added benefite of requiring less maintenance. Most "shiny" or "bright" copper you see on my site has been treated to prevent tarnishing.
To polish your jewelry, a microfiber cloth, jewelry cloth, and Q tips work well. You can dip a Q tip in your average jewelry cleaner and wipe the surfaces. Be sure to check the compatibility of the cleaner with your jewelry, though it is typically compatible with most metals, it may not be recommended for some types of stones.
You can also use the following methods to make your own DIY at home jewelry cleaner. Note: If you use this on deliberately tarnished copper, it is better to dab the external surfaces rather than soak the piece. Note 2: Do not use heat with any colored quartz such as amethyst, citrine, and rose quartz. Light and heat fade the color, store in a cool dark place when not being worn.
Water and Baking Soda Method
You will need 2 parts water to 1 part baking soda (use a bit more water if the jewelry has delicate features). Stir into a paste. Use an old toothbrush or cleaning wand to apply this DIY cleaner in gentle motions and movements.
Dish Liquid and Water
No fancy cleaning methods needed for this option. Simply rinse the jewelry off in the same way you would clean your own hands.
Salt Water Method
Line a cooking pan or large dinner plate with a sheet of aluminum foil. Place each piece of jewelry directly on the foil.
Combine 1 cup of boiling water with 1 tablespoon of salt and 1 tablespoon of baking soda together. Pour the mixture into the pan or large dinner plate. Add 1/2 cup of vinegar to the mixture.
Bubbles will surface! Let the mixture sit for about 10 minutes (use a spoon if needed for stirring). Rinse in cool water and dry off with a microfiber cloth.