Upgrade your fashion with Round AB Zircon Prong Set Internally Threaded Top Surgical Steel Belly Button Rings. Utilizing hypoallergenic 316L surgical steel, these rings are long-lasting, corrosion-resistant, and ideal for sensitive skin. The internally threaded construction ensures a seamless, secure fit, while the round AB zircon gemstone boasts an opalescent shimmer. Perfect for everyday wear or special occasions, this navel ring adds a touch of sophistication and radiance to your style. 316L Surgical Steel PVD Zircon Thickness 14GA (1.6mm) Length 3/8" (10mm) Ball Size 5 & 8mm.