Each earring is made up of two portions of articulated circles which close by simply pressing the straight rod for pierced ears. The black color is obtained through an ionization plating process. "Ionization is an electrolysis treatment system that coats the jewelry metal with a specific plating. This technique protects the metal and prevents metal ions from migrating to the epidermis. Thus, ionized jewelry in contact with the skin no longer causes allergies." Jewel that does not oxidize or rust. Nickel-free, lead-free and does not cause allergy. Resistant to water, perspiration, make-up, creams etc... In short, a jewel for life! STYLE TENDANCE is an internet resale company created in 2008 as a Micro-Enterprise. With more than 1000 carefully selected references. Orders placed from Friday