This corkscrew nose ring is made of 5A cubic zirconia and ASTM F136 implant grade titanium instead of G23 titanium. G23 titanium is not an implant grade of titanium. Implant grade titanium is a highly preferred material for body jewelry as it is durable, hypoallergic, lead free, nickel free, non-corrosive, safe from contamination, and adaptable to our body. Corkscrew Nose Ring, Nose Piercing Jewelry, Jewelry Essentials, Nose Ring Stud, Nose Piercing, Precious Gemstones, Jewelry Bags, Piercing Jewelry, Our Body