From UNOde50, these earrings feature:  Each UNOde50 piece is unique. Designed and manufactured at its headquarters in Madrid, all products are handcrafted in Spain. All of our jewelry is made of a special metal alloy. The pieces are then plated with silver or 18K gold. All jewelry is hypoallergenic and nickel free. The irregular oval shape gives these Uno de 50 earrings an earthy vibe to this hoop design.  Hoop earrings Silver-tone metal Post closure Handmade Approx. 1.5" 1-year warranty  Imported.