Shop Spencer’s for Body Sensitive Cartilage Rings! These cartilage piercing earrings are all made from ASTM F-136 titanium, which means they’re hypoallergenic and nickel free. If you have a cartilage piercing and have sensitive skin, you can be assured that any option from this category will not only look great on you but won’t irritate your skin. Choose from a wide selection of body sensitive cartilage jewelry that features gleaming Swarovski gems and designs like flowers and stars. Here you’ll find everything from titanium hoop rings to barbells in a variety of colors and styles.