Metal This double nose ring piercing is made of ASTM F136 implant-grade titanium – the kind used in surgical implants. Implant-grade titanium is a highly preferred material for body jewelry as it is durable, hypoallergenic, nickel-free, non-corrosive, safe from contamination, and adaptable to our bodies. Details Materials: ASTM F136 implant-grade titanium, cubic zirconia; Metal color: Silver, gold, black; Gem color: Clear; Thickness: 16 gauge (1.2mm); Diameter: 6mm, 8mm, 10mm, 12mm...