Concepts® Earrings are made of nickel allergy free highly polished surgical stainless steel and 24 Karat Gold. The entire earring is made allergy free. Concepts® are made so that all parts that touch the ear are safe for Sensitive Ears. Concepts® Goldtone styles are made of surgical stainless steel, then a very heavy layer of 24kt gold is electronically plated directly onto the steel. The fine jewelry finish of Concepts® Earrings is guaranteed.