316LVM surgical steel and PVD metal alloy Opal Claw-set External 19mm curved bar Lobes, helix, conch, and more! Each piece is sold individually. The Opal Sun Cartilage Stud is a high-quality piece best for cartilage piercings. Here are a few examples: helix, tragus, flat, and even ear lobes! This piece goes through your piercing from the front and screws into the back with an bead. This bead is more secure and more comfortable than a traditional earring with a butterfly backing. The Opal Sun Cartilage Stud post is 316LVM surgical steel! 316LVM surgical steel is a low carbon and goes through vacuum melting. The process sucks the nickel out of the steel. Nickel is one of the most common causes of metal allergies. This process cannot remove 100% of nickel. As a result, a small number of people react to it. Metal alloys are ideal for casting, which makes them perfect for jewelry with fine details. Many people have sensitivities to these alloys and may react. Metal Alloys with a PVD coating can help negate this reaction, but they may still irritate those with the strongest sensitivities. To avoid turning green, it is recommended that metal alloy jewelry be cleaned often and not worn in moist/sweaty places. The stones are lab-grown opals. Lab-grown opals are superior for body jewelry because they are more durable than natural opals. This piece is 16g. 16g is the standard size for a cartilage piercing if you were pierced with a needle. However, if you were pierced with a gun, your piercing may be too small for this. You can shop our for options that will fit you. Show us where you wear yours with #BodyModsFamous on Instagram. We LOVE seeing our jewelry out in the real world. Finally, don't forget to follow us on and for updates on new jewelry, product info, sales, and more.