Sterling silver marquise crystal screw-on flat back earrings feature a delicate three-stone cluster, perfectly sized for second hole piercings. Details .925 Sterling Silver | Hypoallergenic, lead and nickel free White Zirconia Gemstone Front 0.2x0.24in(5x6mm) Post Length 6mm, Thickness 1.2mm(16ga) Front threaded screw closure on 3mm heart flat back .925 Sold as a pair of earrings