If you need to remove rust from metal, there are countless commercial products out at hand, but for the most part of them are abundantly toxic. Loads of rust removers rely on round about form of acid, whichever phosphoric or oxalic to do the job. If you opt to use them, it is influential to don rubber gloves and follow directions and precautions on the label very meticulously.
If toxic chemicals make it to you nervous, you can find most of the rust removing products that can safely remove rust from metal without fumes or rubber gloves. White vinegar, for example, facilitates like a charm. For small stuff, like studs, just pour a small amount vinegar addicted to a glass and let the matter have a capable soak. Once you see the rust has dissolved, just wash the jewelry off and dry. Vinegar can also be used on bigger items, either pour it unswervingly on, or spread it with a cloth. When the rust is dissolved, just wipe and rinse.
Baking soda is any more natural rust remedy. To remove rust from metal, make a paste of baking soda and water. Make sure the solution is pasty enough to adhere to the surface, then butter it onto the metal and let it sit. Once the rust is loose, you can scrub it off. If the rust stains are awfully deep, they may call for added applications. Baking soda paste can also be used in a form of other ways around the house. It is a good substitute for many toxic household cleaners.
If you want to remove rust from metal and don't mind applying some elbow grease, you can try to remove rust from metal manually with sandpaper or some other type of coarse item, like steel wool. This may take a while though, and if the rust is extremely widespread, it may take a number of attempts to get down to the clean metal.
Of course, it is best to not let your metals get out of practice at all. Keeping your metals as dry as achievable helps with prevention because it is water that sets the stage for rust to appear. Since prevention isn't always possible, especially if you live in a place with a lot of humidity, it’s a good idea to attack rust right away before it starts eating away at the metal. Remember, the longer rust is left untreated, the harder it is to remove and the more severe the damage.
You can also try using lemon juice and Morton's salt to clean rust from a metal body. But you would need to rub the metal clean - sometimes it is too tough and hazardous to clean something in this way where you would need to depend on your rubbing strength a lot. To rub the metal body, you may use a piece of cotton, scrubber or metal wire wool (be careful while using wools).
If you are not pleased with these home made solutions, you can find some rust remover for metal tools and other metal items. These often work wonders if you can find the right cleaner for the right metal. You can catch on the recommendations provided in the container or user manual to find out if that rust remover is the perfect one for you or not.