Earrings: Waterproof Tarnish Resistant 18kt gold pvd plated 316L stainless steel Approximately 1 inch Lead, nickel and cadmium free Necklace: Hypoallergenic Waterproof Tarnish Resistant 18kt gold pvd plated 316L stainless steel Cross measures: Width: 23mm Height: 73mm Lead, nickel and cadmium free