Also know, what are the balls on piercings called?
A barbell is a bar with a ball on each end. This one is often called a horseshoe.
Regarding this, can I put an earring back on my nose ring?
Remember that an ear piercing cannot be replaced as a nose piercing, earrings are designed specifically for the ear if you use it on the nose so it may look a bit wired. You should use earrings only on the ears and nose jewelry only on the nose.
What kind of jewelry do piercers use?
Jewelry for initial piercings should be made of material that will not react with the body: implant grade stainless steel and titanium; gold (14K or higher); or platinum. In some cases, inert plastics like Tygon® or PTFE (Teflon®) are also acceptable.
A segment ring is the perfect way to showcase a piercing with more style and flare then a simple captive bead. The best part about the segment ring is the fact that they are so versatile. Not only can they be used in the septum, but they can be used in other healed piercings such as the daith!
This is a popular piece of body jewelry because it conveniently allows the wearer to remove the ring by simply removing the captive bead, the bead is held firmly in place so that it will not easily fall out.